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Simplifying 65 + -2x = 2x + -21 Reorder the terms: 65 + -2x = -21 + 2x Solving 65 + -2x = -21 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. 65 + -2x + -2x = -21 + 2x + -2x Combine like terms: -2x + -2x = -4x 65 + -4x = -21 + 2x + -2x Combine like terms: 2x + -2x = 0 65 + -4x = -21 + 0 65 + -4x = -21 Add '-65' to each side of the equation. 65 + -65 + -4x = -21 + -65 Combine like terms: 65 + -65 = 0 0 + -4x = -21 + -65 -4x = -21 + -65 Combine like terms: -21 + -65 = -86 -4x = -86 Divide each side by '-4'. x = 21.5 Simplifying x = 21.5
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