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Simplifying 3 + 1.3x = 2.1x Solving 3 + 1.3x = 2.1x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.1x' to each side of the equation. 3 + 1.3x + -2.1x = 2.1x + -2.1x Combine like terms: 1.3x + -2.1x = -0.8x 3 + -0.8x = 2.1x + -2.1x Combine like terms: 2.1x + -2.1x = 0.0 3 + -0.8x = 0.0 Add '-3' to each side of the equation. 3 + -3 + -0.8x = 0.0 + -3 Combine like terms: 3 + -3 = 0 0 + -0.8x = 0.0 + -3 -0.8x = 0.0 + -3 Combine like terms: 0.0 + -3 = -3 -0.8x = -3 Divide each side by '-0.8'. x = 3.75 Simplifying x = 3.75
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