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Simplifying 4x + y + 7 = -9 Reorder the terms: 7 + 4x + y = -9 Solving 7 + 4x + y = -9 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + 4x + -7 + y = -9 + -7 Reorder the terms: 7 + -7 + 4x + y = -9 + -7 Combine like terms: 7 + -7 = 0 0 + 4x + y = -9 + -7 4x + y = -9 + -7 Combine like terms: -9 + -7 = -16 4x + y = -16 Add '-1y' to each side of the equation. 4x + y + -1y = -16 + -1y Combine like terms: y + -1y = 0 4x + 0 = -16 + -1y 4x = -16 + -1y Divide each side by '4'. x = -4 + -0.25y Simplifying x = -4 + -0.25y
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