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Simplifying -7x + -9y = 63 * -7 Multiply 63 * -7 -7x + -9y = -441 Solving -7x + -9y = -441 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9y' to each side of the equation. -7x + -9y + 9y = -441 + 9y Combine like terms: -9y + 9y = 0 -7x + 0 = -441 + 9y -7x = -441 + 9y Divide each side by '-7'. x = 63 + -1.285714286y Simplifying x = 63 + -1.285714286y
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