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Simplifying 7 = 0.4x + -1y Solving 7 = 0.4x + -1y Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4x' to each side of the equation. 7 + -0.4x = 0.4x + -0.4x + -1y Combine like terms: 0.4x + -0.4x = 0.0 7 + -0.4x = 0.0 + -1y 7 + -0.4x = -1y Add '-7' to each side of the equation. 7 + -7 + -0.4x = -7 + -1y Combine like terms: 7 + -7 = 0 0 + -0.4x = -7 + -1y -0.4x = -7 + -1y Divide each side by '-0.4'. x = 17.5 + 2.5y Simplifying x = 17.5 + 2.5y
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