20x+(-8x-15)=3(4-5)

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Solution for 20x+(-8x-15)=3(4-5) equation: 


Simplifying
20x + (-8x + -15) = 3(4 + -5)

Reorder the terms:
20x + (-15 + -8x) = 3(4 + -5)

Remove parenthesis around (-15 + -8x)
20x + -15 + -8x = 3(4 + -5)

Reorder the terms:
-15 + 20x + -8x = 3(4 + -5)

Combine like terms: 20x + -8x = 12x
-15 + 12x = 3(4 + -5)

Combine like terms: 4 + -5 = -1
-15 + 12x = 3(-1)

Multiply 3 * -1
-15 + 12x = -3

Solving
-15 + 12x = -3

Solving for variable 'x'.

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

Add '15' to each side of the equation.
-15 + 15 + 12x = -3 + 15

Combine like terms: -15 + 15 = 0
0 + 12x = -3 + 15
12x = -3 + 15

Combine like terms: -3 + 15 = 12
12x = 12

Divide each side by '12'.
x = 1

Simplifying
x = 1

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