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Simplifying 136 + -3x = 42x + 21 Reorder the terms: 136 + -3x = 21 + 42x Solving 136 + -3x = 21 + 42x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42x' to each side of the equation. 136 + -3x + -42x = 21 + 42x + -42x Combine like terms: -3x + -42x = -45x 136 + -45x = 21 + 42x + -42x Combine like terms: 42x + -42x = 0 136 + -45x = 21 + 0 136 + -45x = 21 Add '-136' to each side of the equation. 136 + -136 + -45x = 21 + -136 Combine like terms: 136 + -136 = 0 0 + -45x = 21 + -136 -45x = 21 + -136 Combine like terms: 21 + -136 = -115 -45x = -115 Divide each side by '-45'. x = 2.555555556 Simplifying x = 2.555555556
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