.20x+40+.25x+80=x-1

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Solution for .20x+40+.25x+80=x-1 equation:


Simplifying
0.20x + 40 + 0.25x + 80 = x + -1

Reorder the terms:
40 + 80 + 0.20x + 0.25x = x + -1

Combine like terms: 40 + 80 = 120
120 + 0.20x + 0.25x = x + -1

Combine like terms: 0.20x + 0.25x = 0.45x
120 + 0.45x = x + -1

Reorder the terms:
120 + 0.45x = -1 + x

Solving
120 + 0.45x = -1 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
120 + 0.45x + -1x = -1 + x + -1x

Combine like terms: 0.45x + -1x = -0.55x
120 + -0.55x = -1 + x + -1x

Combine like terms: x + -1x = 0
120 + -0.55x = -1 + 0
120 + -0.55x = -1

Add '-120' to each side of the equation.
120 + -120 + -0.55x = -1 + -120

Combine like terms: 120 + -120 = 0
0 + -0.55x = -1 + -120
-0.55x = -1 + -120

Combine like terms: -1 + -120 = -121
-0.55x = -121

Divide each side by '-0.55'.
x = 220

Simplifying
x = 220

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