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Simplifying x + 5(28) = 2x(21) Multiply 5 * 28 x + 140 = 2x(21) Reorder the terms: 140 + x = 2x(21) Reorder the terms for easier multiplication: 140 + x = 2 * 21x Multiply 2 * 21 140 + x = 42x Solving 140 + x = 42x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42x' to each side of the equation. 140 + x + -42x = 42x + -42x Combine like terms: x + -42x = -41x 140 + -41x = 42x + -42x Combine like terms: 42x + -42x = 0 140 + -41x = 0 Add '-140' to each side of the equation. 140 + -140 + -41x = 0 + -140 Combine like terms: 140 + -140 = 0 0 + -41x = 0 + -140 -41x = 0 + -140 Combine like terms: 0 + -140 = -140 -41x = -140 Divide each side by '-41'. x = 3.414634146 Simplifying x = 3.414634146
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