70/80 or 7/8
2x9
9 2 cancel both 9 and 2
———
1
3 5
— —
4 7
Multiply 4 and 7 = 28
28 divided by 4 is equal
to 7 and then times by 3. So the answer is 21
3 21
— = — copy the denominator
4 28 next is divide 28 and 4,
28 and 7
28 divided by 7 is
equal to 4 and times it by 5. So the answer is 20
5 20
— = —
7 28
3/10 x 5/6
Cancel 5 and 10 then put 1 above the 5 and 2 above the 10
And then cancel 3 and 6 then put 1 above the 3 and 2 above the 6
I used my old notebook for this
