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Simplifying 13x + 12 = -15x + 210 Reorder the terms: 12 + 13x = -15x + 210 Reorder the terms: 12 + 13x = 210 + -15x Solving 12 + 13x = 210 + -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. 12 + 13x + 15x = 210 + -15x + 15x Combine like terms: 13x + 15x = 28x 12 + 28x = 210 + -15x + 15x Combine like terms: -15x + 15x = 0 12 + 28x = 210 + 0 12 + 28x = 210 Add '-12' to each side of the equation. 12 + -12 + 28x = 210 + -12 Combine like terms: 12 + -12 = 0 0 + 28x = 210 + -12 28x = 210 + -12 Combine like terms: 210 + -12 = 198 28x = 198 Divide each side by '28'. x = 7.071428571 Simplifying x = 7.071428571
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