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Simplifying 21x + -7 = -10x + -30 Reorder the terms: -7 + 21x = -10x + -30 Reorder the terms: -7 + 21x = -30 + -10x Solving -7 + 21x = -30 + -10x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10x' to each side of the equation. -7 + 21x + 10x = -30 + -10x + 10x Combine like terms: 21x + 10x = 31x -7 + 31x = -30 + -10x + 10x Combine like terms: -10x + 10x = 0 -7 + 31x = -30 + 0 -7 + 31x = -30 Add '7' to each side of the equation. -7 + 7 + 31x = -30 + 7 Combine like terms: -7 + 7 = 0 0 + 31x = -30 + 7 31x = -30 + 7 Combine like terms: -30 + 7 = -23 31x = -23 Divide each side by '31'. x = -0.7419354839 Simplifying x = -0.7419354839
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