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Simplifying 3x + -45 = 21x + 2 Reorder the terms: -45 + 3x = 21x + 2 Reorder the terms: -45 + 3x = 2 + 21x Solving -45 + 3x = 2 + 21x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-21x' to each side of the equation. -45 + 3x + -21x = 2 + 21x + -21x Combine like terms: 3x + -21x = -18x -45 + -18x = 2 + 21x + -21x Combine like terms: 21x + -21x = 0 -45 + -18x = 2 + 0 -45 + -18x = 2 Add '45' to each side of the equation. -45 + 45 + -18x = 2 + 45 Combine like terms: -45 + 45 = 0 0 + -18x = 2 + 45 -18x = 2 + 45 Combine like terms: 2 + 45 = 47 -18x = 47 Divide each side by '-18'. x = -2.611111111 Simplifying x = -2.611111111
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