1.80-2.25=n

Solution for 1.80-2.25=n equation:

Simplifying
1.80 + -2.25 = n

Combine like terms: 1.80 + -2.25 = -0.45
-0.45 = n

Solving
-0.45 = n

Solving for variable 'n'.

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

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

Combine like terms: n + -1n = 0
-0.45 + -1n = 0

Add '0.45' to each side of the equation.
-0.45 + 0.45 + -1n = 0 + 0.45

Combine like terms: -0.45 + 0.45 = 0.00
0.00 + -1n = 0 + 0.45
-1n = 0 + 0.45

Combine like terms: 0 + 0.45 = 0.45
-1n = 0.45

Divide each side by '-1'.
n = -0.45

Simplifying
n = -0.45