400=1000+y

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Solution for 400=1000+y equation:


Simplifying
400 = 1000 + y

Solving
400 = 1000 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
400 + -1y = 1000 + y + -1y

Combine like terms: y + -1y = 0
400 + -1y = 1000 + 0
400 + -1y = 1000

Add '-400' to each side of the equation.
400 + -400 + -1y = 1000 + -400

Combine like terms: 400 + -400 = 0
0 + -1y = 1000 + -400
-1y = 1000 + -400

Combine like terms: 1000 + -400 = 600
-1y = 600

Divide each side by '-1'.
y = -600

Simplifying
y = -600

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