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Simplifying 7 + -3a = 11 + a Solving 7 + -3a = 11 + a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1a' to each side of the equation. 7 + -3a + -1a = 11 + a + -1a Combine like terms: -3a + -1a = -4a 7 + -4a = 11 + a + -1a Combine like terms: a + -1a = 0 7 + -4a = 11 + 0 7 + -4a = 11 Add '-7' to each side of the equation. 7 + -7 + -4a = 11 + -7 Combine like terms: 7 + -7 = 0 0 + -4a = 11 + -7 -4a = 11 + -7 Combine like terms: 11 + -7 = 4 -4a = 4 Divide each side by '-4'. a = -1 Simplifying a = -1
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