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Simplifying 1.7a + 7.5b + -7.2a + -1(-7.5b) = 0 Remove parenthesis around (-7.5b) 1.7a + 7.5b + -7.2a + -1 * -7.5b = 0 Multiply -1 * -7.5 1.7a + 7.5b + -7.2a + 7.5b = 0 Reorder the terms: 1.7a + -7.2a + 7.5b + 7.5b = 0 Combine like terms: 1.7a + -7.2a = -5.5a -5.5a + 7.5b + 7.5b = 0 Combine like terms: 7.5b + 7.5b = 15b -5.5a + 15b = 0 Solving -5.5a + 15b = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-15b' to each side of the equation. -5.5a + 15b + -15b = 0 + -15b Combine like terms: 15b + -15b = 0 -5.5a + 0 = 0 + -15b -5.5a = 0 + -15b Remove the zero: -5.5a = -15b Divide each side by '-5.5'. a = 2.727272727b Simplifying a = 2.727272727b
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