2.25*0.2=b

Solution for 2.25*0.2=b equation:

Simplifying
2.25 * 0.2 = b

Multiply 2.25 * 0.2
0.45 = b

Solving
0.45 = b

Solving for variable 'b'.

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

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

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

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

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

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

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

Simplifying
b = 0.45