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Simplifying 7x + 13 = -5 + 21 Reorder the terms: 13 + 7x = -5 + 21 Combine like terms: -5 + 21 = 16 13 + 7x = 16 Solving 13 + 7x = 16 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + 7x = 16 + -13 Combine like terms: 13 + -13 = 0 0 + 7x = 16 + -13 7x = 16 + -13 Combine like terms: 16 + -13 = 3 7x = 3 Divide each side by '7'. x = 0.4285714286 Simplifying x = 0.4285714286
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