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Simplifying 7 + -7a = -2x + -1 Reorder the terms: 7 + -7a = -1 + -2x Solving 7 + -7a = -1 + -2x Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -7a = -1 + -7 + -2x Combine like terms: 7 + -7 = 0 0 + -7a = -1 + -7 + -2x -7a = -1 + -7 + -2x Combine like terms: -1 + -7 = -8 -7a = -8 + -2x Divide each side by '-7'. a = 1.142857143 + 0.2857142857x Simplifying a = 1.142857143 + 0.2857142857x
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