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Simplifying 4 + -1(7x) = 18 Remove parenthesis around (7x) 4 + -1 * 7x = 18 Multiply -1 * 7 4 + -7x = 18 Solving 4 + -7x = 18 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -7x = 18 + -4 Combine like terms: 4 + -4 = 0 0 + -7x = 18 + -4 -7x = 18 + -4 Combine like terms: 18 + -4 = 14 -7x = 14 Divide each side by '-7'. x = -2 Simplifying x = -2
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