given a= 3/4b +0.23 and a= 0.65 what is the value of b?

a= 3/4b +0.23 and a= 0.65 what is the value of b?   .... so we have...

0.65 = (3/4)b + 0.23           subtract 0.23 to both sides

0.42  = (3/4)b                     multiply both sies by 4/3

(4/3)(0.42)  = b  = 0.56