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Simplifying 121 = x + 6 * 20 + -4x Multiply 6 * 20 121 = x + 120 + -4x Reorder the terms: 121 = 120 + x + -4x Combine like terms: x + -4x = -3x 121 = 120 + -3x Solving 121 = 120 + -3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3x' to each side of the equation. 121 + 3x = 120 + -3x + 3x Combine like terms: -3x + 3x = 0 121 + 3x = 120 + 0 121 + 3x = 120 Add '-121' to each side of the equation. 121 + -121 + 3x = 120 + -121 Combine like terms: 121 + -121 = 0 0 + 3x = 120 + -121 3x = 120 + -121 Combine like terms: 120 + -121 = -1 3x = -1 Divide each side by '3'. x = -0.3333333333 Simplifying x = -0.3333333333
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