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Simplifying 2.1x + 5 = 1.2x + 2 Reorder the terms: 5 + 2.1x = 1.2x + 2 Reorder the terms: 5 + 2.1x = 2 + 1.2x Solving 5 + 2.1x = 2 + 1.2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.2x' to each side of the equation. 5 + 2.1x + -1.2x = 2 + 1.2x + -1.2x Combine like terms: 2.1x + -1.2x = 0.9x 5 + 0.9x = 2 + 1.2x + -1.2x Combine like terms: 1.2x + -1.2x = 0.0 5 + 0.9x = 2 + 0.0 5 + 0.9x = 2 Add '-5' to each side of the equation. 5 + -5 + 0.9x = 2 + -5 Combine like terms: 5 + -5 = 0 0 + 0.9x = 2 + -5 0.9x = 2 + -5 Combine like terms: 2 + -5 = -3 0.9x = -3 Divide each side by '0.9'. x = -3.333333333 Simplifying x = -3.333333333
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