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Simplifying 42 = 36 + 4a Solving 42 = 36 + 4a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-4a' to each side of the equation. 42 + -4a = 36 + 4a + -4a Combine like terms: 4a + -4a = 0 42 + -4a = 36 + 0 42 + -4a = 36 Add '-42' to each side of the equation. 42 + -42 + -4a = 36 + -42 Combine like terms: 42 + -42 = 0 0 + -4a = 36 + -42 -4a = 36 + -42 Combine like terms: 36 + -42 = -6 -4a = -6 Divide each side by '-4'. a = 1.5 Simplifying a = 1.5
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