SOLUTION: What is the answer to these 4 problems? 7/8 - x = 13/16? 4/7 - x =6/35? 7/9 - x = 1/36? 3/8 - x = 1/24?? I have been trying to work on these but they are difficult

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: What is the answer to these 4 problems? 7/8 - x = 13/16? 4/7 - x =6/35? 7/9 - x = 1/36? 3/8 - x = 1/24?? I have been trying to work on these but they are difficult       Log On


   

Question 539071: What is the answer to these 4 problems? 7/8 - x = 13/16? 4/7 - x =6/35? 7/9 - x = 1/36? 3/8 - x = 1/24?? I have been trying to work on these but they are difficult
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
7%2F8+-+x+=+13%2F16 find LCD
14%2F16+-+x+=+13%2F16 subtract 14/16
-x=-1%2F16 multiply by -1
x=1%2F16
.
4%2F7+-+x+=6%2F35 find LCD multiplied 4/7 by 5/5 ... 5/5=1
20%2F35+-+x+=6%2F35 add x and subtract 6/35
14%2F35=x reduce take out 7/7
2%2F5=x
.
7%2F9+-+x+=+1%2F36
same process as above 36/9=4 multiply 7/9 by 4/4 to get 28/36
27%2F36=x reduce by taking out 9/9
3%2F4=x
.
+3%2F8+-+x+=+1%2F24
same process
1%2F3=x