120+0.8(y-400)+200+400=

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Solution for 120+0.8(y-400)+200+400= equation:


Simplifying
120 + 0.8(y + -400) + 200 + 400 = 0

Reorder the terms:
120 + 0.8(-400 + y) + 200 + 400 = 0
120 + (-400 * 0.8 + y * 0.8) + 200 + 400 = 0
120 + (-320 + 0.8y) + 200 + 400 = 0

Reorder the terms:
120 + -320 + 200 + 400 + 0.8y = 0

Combine like terms: 120 + -320 = -200
-200 + 200 + 400 + 0.8y = 0

Combine like terms: -200 + 200 = 0
0 + 400 + 0.8y = 0
400 + 0.8y = 0

Solving
400 + 0.8y = 0

Solving for variable 'y'.

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

Add '-400' to each side of the equation.
400 + -400 + 0.8y = 0 + -400

Combine like terms: 400 + -400 = 0
0 + 0.8y = 0 + -400
0.8y = 0 + -400

Combine like terms: 0 + -400 = -400
0.8y = -400

Divide each side by '0.8'.
y = -500

Simplifying
y = -500

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