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Simplifying -11.2 + 4(2.1x) = -0.8x Remove parenthesis around (2.1x) -11.2 + 4 * 2.1x = -0.8x Multiply 4 * 2.1 -11.2 + 8.4x = -0.8x Solving -11.2 + 8.4x = -0.8x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8x' to each side of the equation. -11.2 + 8.4x + 0.8x = -0.8x + 0.8x Combine like terms: 8.4x + 0.8x = 9.2x -11.2 + 9.2x = -0.8x + 0.8x Combine like terms: -0.8x + 0.8x = 0.0 -11.2 + 9.2x = 0.0 Add '11.2' to each side of the equation. -11.2 + 11.2 + 9.2x = 0.0 + 11.2 Combine like terms: -11.2 + 11.2 = 0.0 0.0 + 9.2x = 0.0 + 11.2 9.2x = 0.0 + 11.2 Combine like terms: 0.0 + 11.2 = 11.2 9.2x = 11.2 Divide each side by '9.2'. x = 1.217391304 Simplifying x = 1.217391304
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