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Simplifying 0.3x + -0.5(2x + 7) = -0.8(x + 3) Reorder the terms: 0.3x + -0.5(7 + 2x) = -0.8(x + 3) 0.3x + (7 * -0.5 + 2x * -0.5) = -0.8(x + 3) 0.3x + (-3.5 + -1x) = -0.8(x + 3) Reorder the terms: -3.5 + 0.3x + -1x = -0.8(x + 3) Combine like terms: 0.3x + -1x = -0.7x -3.5 + -0.7x = -0.8(x + 3) Reorder the terms: -3.5 + -0.7x = -0.8(3 + x) -3.5 + -0.7x = (3 * -0.8 + x * -0.8) -3.5 + -0.7x = (-2.4 + -0.8x) Solving -3.5 + -0.7x = -2.4 + -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. -3.5 + -0.7x + 0.8x = -2.4 + -0.8x + 0.8x Combine like terms: -0.7x + 0.8x = 0.1x -3.5 + 0.1x = -2.4 + -0.8x + 0.8x Combine like terms: -0.8x + 0.8x = 0.0 -3.5 + 0.1x = -2.4 + 0.0 -3.5 + 0.1x = -2.4 Add '3.5' to each side of the equation. -3.5 + 3.5 + 0.1x = -2.4 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + 0.1x = -2.4 + 3.5 0.1x = -2.4 + 3.5 Combine like terms: -2.4 + 3.5 = 1.1 0.1x = 1.1 Divide each side by '0.1'. x = 11 Simplifying x = 11
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