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Simplifying 4 + 5a = 8 + 20a Solving 4 + 5a = 8 + 20a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-20a' to each side of the equation. 4 + 5a + -20a = 8 + 20a + -20a Combine like terms: 5a + -20a = -15a 4 + -15a = 8 + 20a + -20a Combine like terms: 20a + -20a = 0 4 + -15a = 8 + 0 4 + -15a = 8 Add '-4' to each side of the equation. 4 + -4 + -15a = 8 + -4 Combine like terms: 4 + -4 = 0 0 + -15a = 8 + -4 -15a = 8 + -4 Combine like terms: 8 + -4 = 4 -15a = 4 Divide each side by '-15'. a = -0.2666666667 Simplifying a = -0.2666666667
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