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Simplifying 4x + (x + -7) = 23 Reorder the terms: 4x + (-7 + x) = 23 Remove parenthesis around (-7 + x) 4x + -7 + x = 23 Reorder the terms: -7 + 4x + x = 23 Combine like terms: 4x + x = 5x -7 + 5x = 23 Solving -7 + 5x = 23 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 + 7 + 5x = 23 + 7 Combine like terms: -7 + 7 = 0 0 + 5x = 23 + 7 5x = 23 + 7 Combine like terms: 23 + 7 = 30 5x = 30 Divide each side by '5'. x = 6 Simplifying x = 6
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