Multiply both sides by 2: $ x + 30 = 50 $.

["SEO-Optimized Article: Solving $ x + 30 = 50 $: A Step-by-Step Guide with Multiplication Tips", "Understanding how to manipulate algebraic equations is essential for success in mathematics. One fundamental skill is multiplying both sides by a number to isolate variables—a common step when solving equations like $ x + 30 = 50 $. In this article, we’ll explore how to multiply both sides by 2 and why this technique works, helping you build stronger algebra skills and improve your problem-solving abilities.", "---", "### What Does “Multiply Both Sides by 2” Mean?", "The equation $ x + 30 = 50 $ tells us that when we add 30 to $ x $, the result is 50. To solve for $ x $, we must undo the addition by performing the opposite operation: subtraction. However, there’s another efficient approach—multiplying both sides by 2—especially when scaling the entire equation helps simplify expressions or reveal solutions more clearly.", "---", "### How to Multiply Both Sides by 2", "Let’s apply multiplication to solve $ x + 30 = 50 $:", "1. Start with the original equation:\n $$\n x + 30 = 50\n $$", "2. Multiply both sides of the equation by 2:\n $$\n 2(x + 30) = 2 \ imes 50\n $$", "3. Apply the distributive property on the left side:\n $$\n 2x + 60 = 100\n $$", "4. Now subtract 60 from both sides to isolate $ x $:\n $$\n 2x = 100 - 60\n \Rightarrow 2x = 40\n $$", "5. Divide both sides by 2:\n $$\n x = \frac{40}{2} = 20\n $$", "So, the solution is $ x = 20 $.", "---", "### Why Multiply Instead of Just Adding or Subtracting?", "While adding or subtracting directly addresses the constant, multiplying both sides by 2 prepares the equation for easier simplification when fractions or more complex coefficients are involved. This method is especially useful in word problems or when scaling equations to match desired forms.", "---", "### Real-World Application Tip", "Multiplicative scaling helps when working with rates, scaling quantities, or converting units. For example, if $ x + 30 $ represents a partial result in a ratio or unit conversion scenario, multiplying by 2 might align numbers for clearer analysis.", "---", "### Step-by-Step Summary:", "| Step | Action | Result |\n|------|--------|--------|\n| 1 | Start: $ x + 30 = 50 $ | Given equation |\n| 2 | Multiply both sides by 2: $ 2(x + 30) = 2 \ imes 50 $ | $ 2x + 60 = 100 $ |\n| 3 | Distribute: $ 2x + 60 = 100 $ | Simplified form |\n| 4 | Subtract 60: $ 2x = 40 $ | Isolating term $ x $ |\n| 5 | Divide by 2: $ x = 20 $ | Final solution |", "---", "### Conclusion", "Multiplying both sides of an equation by a number like 2 is a powerful algebraic technique that simplifies solving for variables and prepares equations for further operations. When tackling $ x + 30 = 50 $, multiplying both sides by 2 efficiently scales the entire equation, making it easier to isolate $ x $ and uncover the correct value.", "Mastering such steps strengthens your foundation in algebra and empowers you to solve more complex equations with confidence. Keep practicing, and soon multiplying both sides will feel natural—paving the way for success in advanced math topics!", "---", "Keywords for SEO:\nMultiply both sides by 2, solve linear equations, algebra step-by-step, how to isolate variable, echo math techniques, algebra homework help, step-by-step equation solving, solve for x algebra, distributive property explained.", "Meta Description:\nLearn how to multiply both sides of the equation $ x + 30 = 50 $ by 2 to isolate $ x $. Step-by-step explanation with practical tips to strengthen your algebra skills. Perfect for students and self-learners.", "---", "Start multiplying, solving, and mastering algebra today!"]