16/7 - 17/9 step by step

To add them, we need to make the bottom nmbers the same

the bottom number are 7 and 9

remmeber taht x times 1=x it doesn't change

also that x/x=1 such taht x=x

so

change the bottom number of the fraction without chanign the value of the fraction by multipliying it by 1

16/7 times 9/9=144/63

17/9 times 7/7=119/63

now we have

144/63-119/63=

(144-119) / 63=

25/63

16/7-17/9

the answer is 25/63

144/63-119/63

144-119=25

25/63