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Simplifying 206 + -3x = 42x + 21 Reorder the terms: 206 + -3x = 21 + 42x Solving 206 + -3x = 21 + 42x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42x' to each side of the equation. 206 + -3x + -42x = 21 + 42x + -42x Combine like terms: -3x + -42x = -45x 206 + -45x = 21 + 42x + -42x Combine like terms: 42x + -42x = 0 206 + -45x = 21 + 0 206 + -45x = 21 Add '-206' to each side of the equation. 206 + -206 + -45x = 21 + -206 Combine like terms: 206 + -206 = 0 0 + -45x = 21 + -206 -45x = 21 + -206 Combine like terms: 21 + -206 = -185 -45x = -185 Divide each side by '-45'. x = 4.111111111 Simplifying x = 4.111111111
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