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Simplifying 12 = 0.9a Solving 12 = 0.9a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-0.9a' to each side of the equation. 12 + -0.9a = 0.9a + -0.9a Combine like terms: 0.9a + -0.9a = 0.0 12 + -0.9a = 0.0 Add '-12' to each side of the equation. 12 + -12 + -0.9a = 0.0 + -12 Combine like terms: 12 + -12 = 0 0 + -0.9a = 0.0 + -12 -0.9a = 0.0 + -12 Combine like terms: 0.0 + -12 = -12 -0.9a = -12 Divide each side by '-0.9'. a = 13.33333333 Simplifying a = 13.33333333
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