-7-8=7x+9x-20x

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Solution for -7-8=7x+9x-20x equation:


Simplifying
-7 + -8 = 7x + 9x + -20x

Combine like terms: -7 + -8 = -15
-15 = 7x + 9x + -20x

Combine like terms: 7x + 9x = 16x
-15 = 16x + -20x

Combine like terms: 16x + -20x = -4x
-15 = -4x

Solving
-15 = -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
-15 + 4x = -4x + 4x

Combine like terms: -4x + 4x = 0
-15 + 4x = 0

Add '15' to each side of the equation.
-15 + 15 + 4x = 0 + 15

Combine like terms: -15 + 15 = 0
0 + 4x = 0 + 15
4x = 0 + 15

Combine like terms: 0 + 15 = 15
4x = 15

Divide each side by '4'.
x = 3.75

Simplifying
x = 3.75

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