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Simplifying x + -4(2x + y) = 5 x + (2x * -4 + y * -4) = 5 x + (-8x + -4y) = 5 Combine like terms: x + -8x = -7x -7x + -4y = 5 Solving -7x + -4y = 5 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4y' to each side of the equation. -7x + -4y + 4y = 5 + 4y Combine like terms: -4y + 4y = 0 -7x + 0 = 5 + 4y -7x = 5 + 4y Divide each side by '-7'. x = -0.7142857143 + -0.5714285714y Simplifying x = -0.7142857143 + -0.5714285714y
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