900+200=y

Solution for 900+200=y equation:

Simplifying
900 + 200 = y

Combine like terms: 900 + 200 = 1100
1100 = y

Solving
1100 = 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.
1100 + -1y = y + -1y

Combine like terms: y + -1y = 0
1100 + -1y = 0

Add '-1100' to each side of the equation.
1100 + -1100 + -1y = 0 + -1100

Combine like terms: 1100 + -1100 = 0
0 + -1y = 0 + -1100
-1y = 0 + -1100

Combine like terms: 0 + -1100 = -1100
-1y = -1100

Divide each side by '-1'.
y = 1100

Simplifying
y = 1100