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Simplifying x + x + -3 + 7(x + -3) + 2(7(x + -3)) = 74 Reorder the terms: x + x + -3 + 7(-3 + x) + 2(7(x + -3)) = 74 x + x + -3 + (-3 * 7 + x * 7) + 2(7(x + -3)) = 74 x + x + -3 + (-21 + 7x) + 2(7(x + -3)) = 74 Reorder the terms: x + x + -3 + -21 + 7x + 2(7(-3 + x)) = 74 x + x + -3 + -21 + 7x + 2((-3 * 7 + x * 7)) = 74 x + x + -3 + -21 + 7x + 2((-21 + 7x)) = 74 x + x + -3 + -21 + 7x + (-21 * 2 + 7x * 2) = 74 x + x + -3 + -21 + 7x + (-42 + 14x) = 74 Reorder the terms: -3 + -21 + -42 + x + x + 7x + 14x = 74 Combine like terms: -3 + -21 = -24 -24 + -42 + x + x + 7x + 14x = 74 Combine like terms: -24 + -42 = -66 -66 + x + x + 7x + 14x = 74 Combine like terms: x + x = 2x -66 + 2x + 7x + 14x = 74 Combine like terms: 2x + 7x = 9x -66 + 9x + 14x = 74 Combine like terms: 9x + 14x = 23x -66 + 23x = 74 Solving -66 + 23x = 74 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '66' to each side of the equation. -66 + 66 + 23x = 74 + 66 Combine like terms: -66 + 66 = 0 0 + 23x = 74 + 66 23x = 74 + 66 Combine like terms: 74 + 66 = 140 23x = 140 Divide each side by '23'. x = 6.086956522 Simplifying x = 6.086956522
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