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Simplifying 20x + -90 + 39x = 978 + -456x Reorder the terms: -90 + 20x + 39x = 978 + -456x Combine like terms: 20x + 39x = 59x -90 + 59x = 978 + -456x Solving -90 + 59x = 978 + -456x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '456x' to each side of the equation. -90 + 59x + 456x = 978 + -456x + 456x Combine like terms: 59x + 456x = 515x -90 + 515x = 978 + -456x + 456x Combine like terms: -456x + 456x = 0 -90 + 515x = 978 + 0 -90 + 515x = 978 Add '90' to each side of the equation. -90 + 90 + 515x = 978 + 90 Combine like terms: -90 + 90 = 0 0 + 515x = 978 + 90 515x = 978 + 90 Combine like terms: 978 + 90 = 1068 515x = 1068 Divide each side by '515'. x = 2.073786408 Simplifying x = 2.073786408
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