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Simplifying 7x = 5(3x + -4) Reorder the terms: 7x = 5(-4 + 3x) 7x = (-4 * 5 + 3x * 5) 7x = (-20 + 15x) Solving 7x = -20 + 15x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15x' to each side of the equation. 7x + -15x = -20 + 15x + -15x Combine like terms: 7x + -15x = -8x -8x = -20 + 15x + -15x Combine like terms: 15x + -15x = 0 -8x = -20 + 0 -8x = -20 Divide each side by '-8'. x = 2.5 Simplifying x = 2.5
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