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Simplifying 3 + -4(2x + -7) + 9 = 186 Reorder the terms: 3 + -4(-7 + 2x) + 9 = 186 3 + (-7 * -4 + 2x * -4) + 9 = 186 3 + (28 + -8x) + 9 = 186 Reorder the terms: 3 + 28 + 9 + -8x = 186 Combine like terms: 3 + 28 = 31 31 + 9 + -8x = 186 Combine like terms: 31 + 9 = 40 40 + -8x = 186 Solving 40 + -8x = 186 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-40' to each side of the equation. 40 + -40 + -8x = 186 + -40 Combine like terms: 40 + -40 = 0 0 + -8x = 186 + -40 -8x = 186 + -40 Combine like terms: 186 + -40 = 146 -8x = 146 Divide each side by '-8'. x = -18.25 Simplifying x = -18.25
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