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Simplifying a * 4 + 7 = 12 Reorder the terms for easier multiplication: 4a + 7 = 12 Reorder the terms: 7 + 4a = 12 Solving 7 + 4a = 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 + 4a = 12 + -7 Combine like terms: 7 + -7 = 0 0 + 4a = 12 + -7 4a = 12 + -7 Combine like terms: 12 + -7 = 5 4a = 5 Divide each side by '4'. a = 1.25 Simplifying a = 1.25
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