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Simplifying -2.8 + 5 + -4.2b + -2 + 3.8a + -1.3b = 0 Reorder the terms: -2.8 + 5 + -2 + 3.8a + -4.2b + -1.3b = 0 Combine like terms: -2.8 + 5 = 2.2 2.2 + -2 + 3.8a + -4.2b + -1.3b = 0 Combine like terms: 2.2 + -2 = 0.2 0.2 + 3.8a + -4.2b + -1.3b = 0 Combine like terms: -4.2b + -1.3b = -5.5b 0.2 + 3.8a + -5.5b = 0 Solving 0.2 + 3.8a + -5.5b = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + 3.8a + -0.2 + -5.5b = 0 + -0.2 Reorder the terms: 0.2 + -0.2 + 3.8a + -5.5b = 0 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + 3.8a + -5.5b = 0 + -0.2 3.8a + -5.5b = 0 + -0.2 Combine like terms: 0 + -0.2 = -0.2 3.8a + -5.5b = -0.2 Add '5.5b' to each side of the equation. 3.8a + -5.5b + 5.5b = -0.2 + 5.5b Combine like terms: -5.5b + 5.5b = 0.0 3.8a + 0.0 = -0.2 + 5.5b 3.8a = -0.2 + 5.5b Divide each side by '3.8'. a = -0.05263157895 + 1.447368421b Simplifying a = -0.05263157895 + 1.447368421b
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