SOLUTION: Please help. 7/8 - 9/20= 7 1/3- 4 5/12= 9 2/5- 1 1/4=

Algebra.Com
Question 728149: Please help.
7/8 - 9/20=
7 1/3- 4 5/12=
9 2/5- 1 1/4=

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
Please help.
7/8 - 9/20
Find a common denominator.
The product always works, 8*20 = 160
7/8 - 9/20 = 140/160 - 720/160 = - 580/160
= -29/8
-----------------
7 1/3- 4 5/12
Change to improper fractions
7 1/3- 4 5/12 = 22/3 - 53/12
Do it like the 1st one.
------------------
9 2/5- 1 1/4
Same as the 2nd one.

RELATED QUESTIONS

please help me in this problem:(integers) evaluate each expression. 1)... (answered by Edwin McCravy)
2/3+3/4=? 1/4+5/6=? 3/4+1/5=? 2/3+5/9=? 1/9+5/6=? 2/3+4/5=? 1/3+7/8=?... (answered by edjones)
1. 8(9+6)-4 2. 3+4*(5-7) 3.... (answered by lefty4ever26)
1+5=24 2+6=20 3+7=14 4+8=5 5+9=? (answered by Alan3354)
2 5/9 + 7 1/8 + 8... (answered by ewatrrr)
Can I get help with these please. 4 4/5 / 8/15 5 6/7 + 4 5/8 2 3/8 + 3 3/4 4 5/9 -... (answered by stanbon)
Please help me solve these equations: x-5 1/3=7 5/6 2 5/16=y+7 5/6 s+ 4 1/2 = 9... (answered by rfer)
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. (answered by josgarithmetic,ikleyn,greenestamps)
wht is the sum for each of these 1/3+3 5/7, 1+9/5, 1 5/8+12/7, 2 4/7+2 1/5,... (answered by nyc_function)