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Simplifying 2.8(1 + 0.5x) = -7 (1 * 2.8 + 0.5x * 2.8) = -7 (2.8 + 1.4x) = -7 Solving 2.8 + 1.4x = -7 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.8' to each side of the equation. 2.8 + -2.8 + 1.4x = -7 + -2.8 Combine like terms: 2.8 + -2.8 = 0.0 0.0 + 1.4x = -7 + -2.8 1.4x = -7 + -2.8 Combine like terms: -7 + -2.8 = -9.8 1.4x = -9.8 Divide each side by '1.4'. x = -7 Simplifying x = -7
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