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Simplifying 165 = 2x + 3(7x + -14) Reorder the terms: 165 = 2x + 3(-14 + 7x) 165 = 2x + (-14 * 3 + 7x * 3) 165 = 2x + (-42 + 21x) Reorder the terms: 165 = -42 + 2x + 21x Combine like terms: 2x + 21x = 23x 165 = -42 + 23x Solving 165 = -42 + 23x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-23x' to each side of the equation. 165 + -23x = -42 + 23x + -23x Combine like terms: 23x + -23x = 0 165 + -23x = -42 + 0 165 + -23x = -42 Add '-165' to each side of the equation. 165 + -165 + -23x = -42 + -165 Combine like terms: 165 + -165 = 0 0 + -23x = -42 + -165 -23x = -42 + -165 Combine like terms: -42 + -165 = -207 -23x = -207 Divide each side by '-23'. x = 9 Simplifying x = 9
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