1=0.2x-0.9x-20

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Solution for 1=0.2x-0.9x-20 equation: 


Simplifying
1 = 0.2x + -0.9x + -20

Reorder the terms:
1 = -20 + 0.2x + -0.9x

Combine like terms: 0.2x + -0.9x = -0.7x
1 = -20 + -0.7x

Solving
1 = -20 + -0.7x

Solving for variable 'x'.

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

Add '0.7x' to each side of the equation.
1 + 0.7x = -20 + -0.7x + 0.7x

Combine like terms: -0.7x + 0.7x = 0.0
1 + 0.7x = -20 + 0.0
1 + 0.7x = -20

Add '-1' to each side of the equation.
1 + -1 + 0.7x = -20 + -1

Combine like terms: 1 + -1 = 0
0 + 0.7x = -20 + -1
0.7x = -20 + -1

Combine like terms: -20 + -1 = -21
0.7x = -21

Divide each side by '0.7'.
x = -30

Simplifying
x = -30

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