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Simplifying 0.7(3x + -5) + 4x = 20 Reorder the terms: 0.7(-5 + 3x) + 4x = 20 (-5 * 0.7 + 3x * 0.7) + 4x = 20 (-3.5 + 2.1x) + 4x = 20 Combine like terms: 2.1x + 4x = 6.1x -3.5 + 6.1x = 20 Solving -3.5 + 6.1x = 20 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + 6.1x = 20 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + 6.1x = 20 + 3.5 6.1x = 20 + 3.5 Combine like terms: 20 + 3.5 = 23.5 6.1x = 23.5 Divide each side by '6.1'. x = 3.852459016 Simplifying x = 3.852459016
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