I suck at this type of math because the teacher did not explain good enough and I’m stuck.

21

Step-by-step explanation:

2^2+b^2=5^2

4+b^2=25

b^2=21

the answer would be 1 1/72

step-by-step explanation:

you can rewrite the equation by separating the parts and then solving individually:

10-9=1

1/8 - 1/9=

find l c d and then combine:

1 1/72

13. jbhgfsfyfvhvbjko