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Simplifying -10a + -7 = 12 Reorder the terms: -7 + -10a = 12 Solving -7 + -10a = 12 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 + -10a = 12 + 7 Combine like terms: -7 + 7 = 0 0 + -10a = 12 + 7 -10a = 12 + 7 Combine like terms: 12 + 7 = 19 -10a = 19 Divide each side by '-10'. a = -1.9 Simplifying a = -1.9
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