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Simplifying 2(6.5) * x + 7 = 21 Multiply 2 * 6.5 13x + 7 = 21 Reorder the terms: 7 + 13x = 21 Solving 7 + 13x = 21 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 + 13x = 21 + -7 Combine like terms: 7 + -7 = 0 0 + 13x = 21 + -7 13x = 21 + -7 Combine like terms: 21 + -7 = 14 13x = 14 Divide each side by '13'. x = 1.076923077 Simplifying x = 1.076923077
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