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Simplifying 4a + 7x + -7yb = 42.7 Reorder the terms: 4a + -7by + 7x = 42.7 Solving 4a + -7by + 7x = 42.7 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '7by' to each side of the equation. 4a + -7by + 7by + 7x = 42.7 + 7by Combine like terms: -7by + 7by = 0 4a + 0 + 7x = 42.7 + 7by 4a + 7x = 42.7 + 7by Add '-7x' to each side of the equation. 4a + 7x + -7x = 42.7 + 7by + -7x Combine like terms: 7x + -7x = 0 4a + 0 = 42.7 + 7by + -7x 4a = 42.7 + 7by + -7x Divide each side by '4'. a = 10.675 + 1.75by + -1.75x Simplifying a = 10.675 + 1.75by + -1.75x
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