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Simplifying 4 + -7(x + 20) = 85 Reorder the terms: 4 + -7(20 + x) = 85 4 + (20 * -7 + x * -7) = 85 4 + (-140 + -7x) = 85 Combine like terms: 4 + -140 = -136 -136 + -7x = 85 Solving -136 + -7x = 85 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '136' to each side of the equation. -136 + 136 + -7x = 85 + 136 Combine like terms: -136 + 136 = 0 0 + -7x = 85 + 136 -7x = 85 + 136 Combine like terms: 85 + 136 = 221 -7x = 221 Divide each side by '-7'. x = -31.57142857 Simplifying x = -31.57142857
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