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Simplifying 84 + -4x = 23x + 21 Reorder the terms: 84 + -4x = 21 + 23x Solving 84 + -4x = 21 + 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. 84 + -4x + -23x = 21 + 23x + -23x Combine like terms: -4x + -23x = -27x 84 + -27x = 21 + 23x + -23x Combine like terms: 23x + -23x = 0 84 + -27x = 21 + 0 84 + -27x = 21 Add '-84' to each side of the equation. 84 + -84 + -27x = 21 + -84 Combine like terms: 84 + -84 = 0 0 + -27x = 21 + -84 -27x = 21 + -84 Combine like terms: 21 + -84 = -63 -27x = -63 Divide each side by '-27'. x = 2.333333333 Simplifying x = 2.333333333
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