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Simplifying 7x + 4y = 13x + -1y + 15 Reorder the terms: 7x + 4y = 15 + 13x + -1y Solving 7x + 4y = 15 + 13x + -1y Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13x' to each side of the equation. 7x + -13x + 4y = 15 + 13x + -13x + -1y Combine like terms: 7x + -13x = -6x -6x + 4y = 15 + 13x + -13x + -1y Combine like terms: 13x + -13x = 0 -6x + 4y = 15 + 0 + -1y -6x + 4y = 15 + -1y Add '-4y' to each side of the equation. -6x + 4y + -4y = 15 + -1y + -4y Combine like terms: 4y + -4y = 0 -6x + 0 = 15 + -1y + -4y -6x = 15 + -1y + -4y Combine like terms: -1y + -4y = -5y -6x = 15 + -5y Divide each side by '-6'. x = -2.5 + 0.8333333333y Simplifying x = -2.5 + 0.8333333333y
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