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Simplifying (15x + -20) = (x + 70) Reorder the terms: (-20 + 15x) = (x + 70) Remove parenthesis around (-20 + 15x) -20 + 15x = (x + 70) Reorder the terms: -20 + 15x = (70 + x) Remove parenthesis around (70 + x) -20 + 15x = 70 + x Solving -20 + 15x = 70 + x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. -20 + 15x + -1x = 70 + x + -1x Combine like terms: 15x + -1x = 14x -20 + 14x = 70 + x + -1x Combine like terms: x + -1x = 0 -20 + 14x = 70 + 0 -20 + 14x = 70 Add '20' to each side of the equation. -20 + 20 + 14x = 70 + 20 Combine like terms: -20 + 20 = 0 0 + 14x = 70 + 20 14x = 70 + 20 Combine like terms: 70 + 20 = 90 14x = 90 Divide each side by '14'. x = 6.428571429 Simplifying x = 6.428571429
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