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Simplifying -70x + 90y = 630 Solving -70x + 90y = 630 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-90y' to each side of the equation. -70x + 90y + -90y = 630 + -90y Combine like terms: 90y + -90y = 0 -70x + 0 = 630 + -90y -70x = 630 + -90y Divide each side by '-70'. x = -9 + 1.285714286y Simplifying x = -9 + 1.285714286y
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