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Simplifying 8x + -7(x + -13) = x + -21 Reorder the terms: 8x + -7(-13 + x) = x + -21 8x + (-13 * -7 + x * -7) = x + -21 8x + (91 + -7x) = x + -21 Reorder the terms: 91 + 8x + -7x = x + -21 Combine like terms: 8x + -7x = 1x 91 + 1x = x + -21 Reorder the terms: 91 + 1x = -21 + x Solving 91 + 1x = -21 + x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. 91 + 1x + -1x = -21 + x + -1x Combine like terms: 1x + -1x = 0 91 + 0 = -21 + x + -1x 91 = -21 + x + -1x Combine like terms: x + -1x = 0 91 = -21 + 0 91 = -21 Add '-91' to each side of the equation. 91 + -91 = -21 + -91 Combine like terms: 91 + -91 = 0 0 = -21 + -91 Combine like terms: -21 + -91 = -112 0 = -112 Simplifying 0 = -112 Combine like terms: 0 + 112 = 112 112 = -112 + 112 Combine like terms: -112 + 112 = 0 112 = 0 The solution to this equation could not be determined.
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