SOLUTION: Hi, I need help with the following three fraction calculations. 1. 12 1/2 + 1/ 1/3 The confusing part here for me is, the 1/2 under the 1, how do I make the denominators

Question 309829: Hi,
I need help with the following three fraction calculations.
1. 12 1/2 + 1/ 1/3
The confusing part here for me is, the 1/2 under the 1, how do I make the denominators the same?
2. 2/ 1/2 + 1/1/5
3. 3/7 x 2 x square root 49 divided 1/9 ?
(sorry I dont know how to make the root or divided sign)
Thanks
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
1. 12 1/2 + 1/ 1/3
-------------
= (2*12+1)/2 + 1*(3/1)
---
= (25/2) + 3
---
= (25/2) + (6/2)
= 31/2
----------------------------

The confusing part here for me is, the 1/2 under the 1, how do I make the denominators the same?
2. 2/ 1/2 + 1/1/5
Invert the denominators and multiply:
= (2*2) + (1*5)
= 9
==============================

3. 3/7 x 2 x square root 49 divided 1/9 ?
---
(3/7)*2*sqrt(49)/(1/9)
---------------------------
= (6/7)*(7*9)
= (6/9)
= 2/3
===================================
Cheers,
Stan H.

RELATED QUESTIONS
Complex Fraction: In the Algebra Book 2, For #26,page 240, I need help on how to... (answered by Tatiana_Stebko)

Hi. I am programming and I need help with the formula for the following series: 1 -... (answered by Fombitz)

i need help to answering the question: 4(t-2)-3(t+1). it is really confusing me!!! (answered by Alan3354,Fombitz)

Please help me with the following three questions they are very confusing and i don't... (answered by checkley71)

Here I need help on parts A thru e its confusing. Fibonacci Numbers 1. Compute the (answered by ikleyn)

Hi could you help me with this problem please, thank you so much! Here is the expression: (answered by maribeth_abella)

z^(4)-z^(2)-2z+2 Please could someone help me with the last part of this question.... (answered by josgarithmetic)

Hi! I need help on an inequality involving absolute value. The problem is... (answered by stanbon)

Hi. this lesson is really confusing me and I need help with it. These questions are... (answered by ikleyn)