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Simplifying 3x + -10(x + 2) = 3 + -7x Reorder the terms: 3x + -10(2 + x) = 3 + -7x 3x + (2 * -10 + x * -10) = 3 + -7x 3x + (-20 + -10x) = 3 + -7x Reorder the terms: -20 + 3x + -10x = 3 + -7x Combine like terms: 3x + -10x = -7x -20 + -7x = 3 + -7x Add '7x' to each side of the equation. -20 + -7x + 7x = 3 + -7x + 7x Combine like terms: -7x + 7x = 0 -20 + 0 = 3 + -7x + 7x -20 = 3 + -7x + 7x Combine like terms: -7x + 7x = 0 -20 = 3 + 0 -20 = 3 Solving -20 = 3 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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