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Simplifying 100 = 200 + -7a Solving 100 = 200 + -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. 100 + 7a = 200 + -7a + 7a Combine like terms: -7a + 7a = 0 100 + 7a = 200 + 0 100 + 7a = 200 Add '-100' to each side of the equation. 100 + -100 + 7a = 200 + -100 Combine like terms: 100 + -100 = 0 0 + 7a = 200 + -100 7a = 200 + -100 Combine like terms: 200 + -100 = 100 7a = 100 Divide each side by '7'. a = 14.28571429 Simplifying a = 14.28571429
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