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Simplifying 9x(1) + 7y = -12 Reorder the terms for easier multiplication: 9 * 1x + 7y = -12 Multiply 9 * 1 9x + 7y = -12 Solving 9x + 7y = -12 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7y' to each side of the equation. 9x + 7y + -7y = -12 + -7y Combine like terms: 7y + -7y = 0 9x + 0 = -12 + -7y 9x = -12 + -7y Divide each side by '9'. x = -1.333333333 + -0.7777777778y Simplifying x = -1.333333333 + -0.7777777778y
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