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Simplifying 13 + -7x = -8 Solving 13 + -7x = -8 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + -7x = -8 + -13 Combine like terms: 13 + -13 = 0 0 + -7x = -8 + -13 -7x = -8 + -13 Combine like terms: -8 + -13 = -21 -7x = -21 Divide each side by '-7'. x = 3 Simplifying x = 3
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