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Simplifying 49 + -7x = 21 Solving 49 + -7x = 21 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-49' to each side of the equation. 49 + -49 + -7x = 21 + -49 Combine like terms: 49 + -49 = 0 0 + -7x = 21 + -49 -7x = 21 + -49 Combine like terms: 21 + -49 = -28 -7x = -28 Divide each side by '-7'. x = 4 Simplifying x = 4
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