Answer:
A) 1/2
B) 31/20
C) 16/35
Step-by-step explanation:
For A, I added 3 plus 1 and kept the denominator 8. Then I simplified.
For B, I multiplied 4/5 by 4/4 and 3/4 by 5/5 so that they would share the denominator 20. Then I added the numerators.
For C, I multiplied 6/7 by 5/5 and 2/5 by 7/7 so that they would share the denominator 35. Then I subtracted the numerators.
