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Simplifying 4x + -7(x + 1) = 12 Reorder the terms: 4x + -7(1 + x) = 12 4x + (1 * -7 + x * -7) = 12 4x + (-7 + -7x) = 12 Reorder the terms: -7 + 4x + -7x = 12 Combine like terms: 4x + -7x = -3x -7 + -3x = 12 Solving -7 + -3x = 12 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -3x = 12 + 7 Combine like terms: -7 + 7 = 0 0 + -3x = 12 + 7 -3x = 12 + 7 Combine like terms: 12 + 7 = 19 -3x = 19 Divide each side by '-3'. x = -6.333333333 Simplifying x = -6.333333333
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