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Simplifying 4(x + -2) + (x + -1) = 7 Reorder the terms: 4(-2 + x) + (x + -1) = 7 (-2 * 4 + x * 4) + (x + -1) = 7 (-8 + 4x) + (x + -1) = 7 Reorder the terms: -8 + 4x + (-1 + x) = 7 Remove parenthesis around (-1 + x) -8 + 4x + -1 + x = 7 Reorder the terms: -8 + -1 + 4x + x = 7 Combine like terms: -8 + -1 = -9 -9 + 4x + x = 7 Combine like terms: 4x + x = 5x -9 + 5x = 7 Solving -9 + 5x = 7 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + 5x = 7 + 9 Combine like terms: -9 + 9 = 0 0 + 5x = 7 + 9 5x = 7 + 9 Combine like terms: 7 + 9 = 16 5x = 16 Divide each side by '5'. x = 3.2 Simplifying x = 3.2
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