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Simplifying 7.5 = 2a + 2b + -4c Solving 7.5 = 2a + 2b + -4c 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. 7.5 + -2a = 2a + 2b + -2a + -4c Reorder the terms: 7.5 + -2a = 2a + -2a + 2b + -4c Combine like terms: 2a + -2a = 0 7.5 + -2a = 0 + 2b + -4c 7.5 + -2a = 2b + -4c Add '-7.5' to each side of the equation. 7.5 + -7.5 + -2a = 2b + -7.5 + -4c Combine like terms: 7.5 + -7.5 = 0.0 0.0 + -2a = 2b + -7.5 + -4c -2a = 2b + -7.5 + -4c Reorder the terms: -2a = -7.5 + 2b + -4c Divide each side by '-2'. a = 3.75 + -1b + 2c Simplifying a = 3.75 + -1b + 2c
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