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Simplifying 15x + -8x + 7 = -42x Reorder the terms: 7 + 15x + -8x = -42x Combine like terms: 15x + -8x = 7x 7 + 7x = -42x Solving 7 + 7x = -42x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '42x' to each side of the equation. 7 + 7x + 42x = -42x + 42x Combine like terms: 7x + 42x = 49x 7 + 49x = -42x + 42x Combine like terms: -42x + 42x = 0 7 + 49x = 0 Add '-7' to each side of the equation. 7 + -7 + 49x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 49x = 0 + -7 49x = 0 + -7 Combine like terms: 0 + -7 = -7 49x = -7 Divide each side by '49'. x = -0.1428571429 Simplifying x = -0.1428571429
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