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Simplifying 7[7 + -1(-2x + -3)] = 42x + 112 Reorder the terms: 7[7 + -1(-3 + -2x)] = 42x + 112 7[7 + (-3 * -1 + -2x * -1)] = 42x + 112 7[7 + (3 + 2x)] = 42x + 112 Combine like terms: 7 + 3 = 10 7[10 + 2x] = 42x + 112 [10 * 7 + 2x * 7] = 42x + 112 [70 + 14x] = 42x + 112 Reorder the terms: 70 + 14x = 112 + 42x Solving 70 + 14x = 112 + 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. 70 + 14x + -42x = 112 + 42x + -42x Combine like terms: 14x + -42x = -28x 70 + -28x = 112 + 42x + -42x Combine like terms: 42x + -42x = 0 70 + -28x = 112 + 0 70 + -28x = 112 Add '-70' to each side of the equation. 70 + -70 + -28x = 112 + -70 Combine like terms: 70 + -70 = 0 0 + -28x = 112 + -70 -28x = 112 + -70 Combine like terms: 112 + -70 = 42 -28x = 42 Divide each side by '-28'. x = -1.5 Simplifying x = -1.5
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