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Simplifying 7 + 21x = 16 Solving 7 + 21x = 16 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 21x = 16 + -7 Combine like terms: 7 + -7 = 0 0 + 21x = 16 + -7 21x = 16 + -7 Combine like terms: 16 + -7 = 9 21x = 9 Divide each side by '21'. x = 0.4285714286 Simplifying x = 0.4285714286
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