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Simplifying 80(a + -5) = 2a Reorder the terms: 80(-5 + a) = 2a (-5 * 80 + a * 80) = 2a (-400 + 80a) = 2a Solving -400 + 80a = 2a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-2a' to each side of the equation. -400 + 80a + -2a = 2a + -2a Combine like terms: 80a + -2a = 78a -400 + 78a = 2a + -2a Combine like terms: 2a + -2a = 0 -400 + 78a = 0 Add '400' to each side of the equation. -400 + 400 + 78a = 0 + 400 Combine like terms: -400 + 400 = 0 0 + 78a = 0 + 400 78a = 0 + 400 Combine like terms: 0 + 400 = 400 78a = 400 Divide each side by '78'. a = 5.128205128 Simplifying a = 5.128205128
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