Answer:
[tex]b=\frac{1}{4}or0.25[/tex]
Step-by-step explanation:
The trick here is to multiply 3/2 by 2/2 to make the base 4, and then subtract.
[tex]\frac{3}{2} +b=\frac{7}{4} \\\frac{2}{2} *\frac{3}{2} +b=\frac{7}{4} \\\frac{6}{4} +b=\frac{7}{4}\\ b=\frac{7}{4} -\frac{6}{4}\\ b=\frac{7-6}{4}\\ b=\frac{1}{4}[/tex]
And that is our answer!
