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Simplifying 7 + 7x + -1(-2x) + 3x = -4 Remove parenthesis around (-2x) 7 + 7x + -1 * -2x + 3x = -4 Multiply -1 * -2 7 + 7x + 2x + 3x = -4 Combine like terms: 7x + 2x = 9x 7 + 9x + 3x = -4 Combine like terms: 9x + 3x = 12x 7 + 12x = -4 Solving 7 + 12x = -4 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 + 12x = -4 + -7 Combine like terms: 7 + -7 = 0 0 + 12x = -4 + -7 12x = -4 + -7 Combine like terms: -4 + -7 = -11 12x = -11 Divide each side by '12'. x = -0.9166666667 Simplifying x = -0.9166666667
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