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Simplifying (x + 40) = (3x) Reorder the terms: (40 + x) = (3x) Remove parenthesis around (40 + x) 40 + x = (3x) Solving 40 + x = (3x) Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '(-3x)' to each side of the equation. 40 + x + (-3x) = (3x) + (-3x) Combine like terms: x + (-3x) = -2x 40 + -2x = (3x) + (-3x) Combine like terms: (3x) + (-3x) = 0 40 + -2x = 0 Add '-40' to each side of the equation. 40 + -40 + -2x = 0 + -40 Combine like terms: 40 + -40 = 0 0 + -2x = 0 + -40 -2x = 0 + -40 Combine like terms: 0 + -40 = -40 -2x = -40 Divide each side by '-2'. x = 20 Simplifying x = 20
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