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Simplifying 7 + -7X = 31 + -28X Solving 7 + -7X = 31 + -28X Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '28X' to each side of the equation. 7 + -7X + 28X = 31 + -28X + 28X Combine like terms: -7X + 28X = 21X 7 + 21X = 31 + -28X + 28X Combine like terms: -28X + 28X = 0 7 + 21X = 31 + 0 7 + 21X = 31 Add '-7' to each side of the equation. 7 + -7 + 21X = 31 + -7 Combine like terms: 7 + -7 = 0 0 + 21X = 31 + -7 21X = 31 + -7 Combine like terms: 31 + -7 = 24 21X = 24 Divide each side by '21'. X = 1.142857143 Simplifying X = 1.142857143
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