-20=0.7x-0.9x

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Solution for -20=0.7x-0.9x equation:


Simplifying
-20 = 0.7x + -0.9x

Combine like terms: 0.7x + -0.9x = -0.2x
-20 = -0.2x

Solving
-20 = -0.2x

Solving for variable 'x'.

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

Add '0.2x' to each side of the equation.
-20 + 0.2x = -0.2x + 0.2x

Combine like terms: -0.2x + 0.2x = 0.0
-20 + 0.2x = 0.0

Add '20' to each side of the equation.
-20 + 20 + 0.2x = 0.0 + 20

Combine like terms: -20 + 20 = 0
0 + 0.2x = 0.0 + 20
0.2x = 0.0 + 20

Combine like terms: 0.0 + 20 = 20
0.2x = 20

Divide each side by '0.2'.
x = 100

Simplifying
x = 100

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