4.5-1.25=a

Solution for 4.5-1.25=a equation:

Simplifying
4.5 + -1.25 = a

Combine like terms: 4.5 + -1.25 = 3.25
3.25 = a

Solving
3.25 = a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
3.25 + -1a = a + -1a

Combine like terms: a + -1a = 0
3.25 + -1a = 0

Add '-3.25' to each side of the equation.
3.25 + -3.25 + -1a = 0 + -3.25

Combine like terms: 3.25 + -3.25 = 0.00
0.00 + -1a = 0 + -3.25
-1a = 0 + -3.25

Combine like terms: 0 + -3.25 = -3.25
-1a = -3.25

Divide each side by '-1'.
a = 3.25

Simplifying
a = 3.25