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Simplifying -2.8a + 1.4b = 0.7c + 0.7d Solving -2.8a + 1.4b = 0.7c + 0.7d Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1.4b' to each side of the equation. -2.8a + 1.4b + -1.4b = 0.7c + -1.4b + 0.7d Combine like terms: 1.4b + -1.4b = 0.0 -2.8a + 0.0 = 0.7c + -1.4b + 0.7d -2.8a = 0.7c + -1.4b + 0.7d Reorder the terms: -2.8a = -1.4b + 0.7c + 0.7d Divide each side by '-2.8'. a = 0.5b + -0.25c + -0.25d Simplifying a = 0.5b + -0.25c + -0.25d
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