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Simplifying 7 + -5x = -3x + -21 Reorder the terms: 7 + -5x = -21 + -3x Solving 7 + -5x = -21 + -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. 7 + -5x + 3x = -21 + -3x + 3x Combine like terms: -5x + 3x = -2x 7 + -2x = -21 + -3x + 3x Combine like terms: -3x + 3x = 0 7 + -2x = -21 + 0 7 + -2x = -21 Add '-7' to each side of the equation. 7 + -7 + -2x = -21 + -7 Combine like terms: 7 + -7 = 0 0 + -2x = -21 + -7 -2x = -21 + -7 Combine like terms: -21 + -7 = -28 -2x = -28 Divide each side by '-2'. x = 14 Simplifying x = 14
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