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Simplifying 43 + -7x = 2x + 21 Reorder the terms: 43 + -7x = 21 + 2x Solving 43 + -7x = 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. 43 + -7x + -2x = 21 + 2x + -2x Combine like terms: -7x + -2x = -9x 43 + -9x = 21 + 2x + -2x Combine like terms: 2x + -2x = 0 43 + -9x = 21 + 0 43 + -9x = 21 Add '-43' to each side of the equation. 43 + -43 + -9x = 21 + -43 Combine like terms: 43 + -43 = 0 0 + -9x = 21 + -43 -9x = 21 + -43 Combine like terms: 21 + -43 = -22 -9x = -22 Divide each side by '-9'. x = 2.444444444 Simplifying x = 2.444444444
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