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Simplifying -187 = 5x + -4(7x + 18) Reorder the terms: -187 = 5x + -4(18 + 7x) -187 = 5x + (18 * -4 + 7x * -4) -187 = 5x + (-72 + -28x) Reorder the terms: -187 = -72 + 5x + -28x Combine like terms: 5x + -28x = -23x -187 = -72 + -23x Solving -187 = -72 + -23x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '23x' to each side of the equation. -187 + 23x = -72 + -23x + 23x Combine like terms: -23x + 23x = 0 -187 + 23x = -72 + 0 -187 + 23x = -72 Add '187' to each side of the equation. -187 + 187 + 23x = -72 + 187 Combine like terms: -187 + 187 = 0 0 + 23x = -72 + 187 23x = -72 + 187 Combine like terms: -72 + 187 = 115 23x = 115 Divide each side by '23'. x = 5 Simplifying x = 5
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