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Simplifying -13 = 7a + -3 Reorder the terms: -13 = -3 + 7a Solving -13 = -3 + 7a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-7a' to each side of the equation. -13 + -7a = -3 + 7a + -7a Combine like terms: 7a + -7a = 0 -13 + -7a = -3 + 0 -13 + -7a = -3 Add '13' to each side of the equation. -13 + 13 + -7a = -3 + 13 Combine like terms: -13 + 13 = 0 0 + -7a = -3 + 13 -7a = -3 + 13 Combine like terms: -3 + 13 = 10 -7a = 10 Divide each side by '-7'. a = -1.428571429 Simplifying a = -1.428571429
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