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Simplifying 4x + 40 = 13x + -42 Reorder the terms: 40 + 4x = 13x + -42 Reorder the terms: 40 + 4x = -42 + 13x Solving 40 + 4x = -42 + 13x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13x' to each side of the equation. 40 + 4x + -13x = -42 + 13x + -13x Combine like terms: 4x + -13x = -9x 40 + -9x = -42 + 13x + -13x Combine like terms: 13x + -13x = 0 40 + -9x = -42 + 0 40 + -9x = -42 Add '-40' to each side of the equation. 40 + -40 + -9x = -42 + -40 Combine like terms: 40 + -40 = 0 0 + -9x = -42 + -40 -9x = -42 + -40 Combine like terms: -42 + -40 = -82 -9x = -82 Divide each side by '-9'. x = 9.111111111 Simplifying x = 9.111111111
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