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Simplifying 42 = 2x + 4 Reorder the terms: 42 = 4 + 2x Solving 42 = 4 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. 42 + -2x = 4 + 2x + -2x Combine like terms: 2x + -2x = 0 42 + -2x = 4 + 0 42 + -2x = 4 Add '-42' to each side of the equation. 42 + -42 + -2x = 4 + -42 Combine like terms: 42 + -42 = 0 0 + -2x = 4 + -42 -2x = 4 + -42 Combine like terms: 4 + -42 = -38 -2x = -38 Divide each side by '-2'. x = 19 Simplifying x = 19
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