3X-2(20-X)=5X-8(12-X)+20

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Solution for 3X-2(20-X)=5X-8(12-X)+20 equation:


Simplifying
3X + -2(20 + -1X) = 5X + -8(12 + -1X) + 20
3X + (20 * -2 + -1X * -2) = 5X + -8(12 + -1X) + 20
3X + (-40 + 2X) = 5X + -8(12 + -1X) + 20

Reorder the terms:
-40 + 3X + 2X = 5X + -8(12 + -1X) + 20

Combine like terms: 3X + 2X = 5X
-40 + 5X = 5X + -8(12 + -1X) + 20
-40 + 5X = 5X + (12 * -8 + -1X * -8) + 20
-40 + 5X = 5X + (-96 + 8X) + 20

Reorder the terms:
-40 + 5X = -96 + 20 + 5X + 8X

Combine like terms: -96 + 20 = -76
-40 + 5X = -76 + 5X + 8X

Combine like terms: 5X + 8X = 13X
-40 + 5X = -76 + 13X

Solving
-40 + 5X = -76 + 13X

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '-13X' to each side of the equation.
-40 + 5X + -13X = -76 + 13X + -13X

Combine like terms: 5X + -13X = -8X
-40 + -8X = -76 + 13X + -13X

Combine like terms: 13X + -13X = 0
-40 + -8X = -76 + 0
-40 + -8X = -76

Add '40' to each side of the equation.
-40 + 40 + -8X = -76 + 40

Combine like terms: -40 + 40 = 0
0 + -8X = -76 + 40
-8X = -76 + 40

Combine like terms: -76 + 40 = -36
-8X = -36

Divide each side by '-8'.
X = 4.5

Simplifying
X = 4.5

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