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Simplifying 7 = -21x Solving 7 = -21x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '21x' to each side of the equation. 7 + 21x = -21x + 21x Combine like terms: -21x + 21x = 0 7 + 21x = 0 Add '-7' to each side of the equation. 7 + -7 + 21x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 21x = 0 + -7 21x = 0 + -7 Combine like terms: 0 + -7 = -7 21x = -7 Divide each side by '21'. x = -0.3333333333 Simplifying x = -0.3333333333
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