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Simplifying (a + 4) = 7a Reorder the terms: (4 + a) = 7a Remove parenthesis around (4 + a) 4 + a = 7a Solving 4 + a = 7a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-7a' to each side of the equation. 4 + a + -7a = 7a + -7a Combine like terms: a + -7a = -6a 4 + -6a = 7a + -7a Combine like terms: 7a + -7a = 0 4 + -6a = 0 Add '-4' to each side of the equation. 4 + -4 + -6a = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -6a = 0 + -4 -6a = 0 + -4 Combine like terms: 0 + -4 = -4 -6a = -4 Divide each side by '-6'. a = 0.6666666667 Simplifying a = 0.6666666667
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