SOLUTION: what is the indicated operation of 2/5+1/4-1/2 2.3/4+5/8 3.7/9-3/4 4.-5/7-(-3/4) 5.14 3/10

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: what is the indicated operation of 2/5+1/4-1/2 2.3/4+5/8 3.7/9-3/4 4.-5/7-(-3/4) 5.14 3/10      Log On


   

Question 835758: what is the indicated operation of 2/5+1/4-1/2 2.3/4+5/8 3.7/9-3/4
4.-5/7-(-3/4) 5.14 3/10
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
I'll do one you, follow the steps and do the others.
When you have fractions, you need to find a common denominator before you can do anything else.
2%2F5%2B1%2F4%2B1%2F2
In this case, use 5%2A4=20.
2%2F5=%282%2F5%29%284%2F4%29=8%2F20
1%2F4=%281%2F4%29%285%2F5%29=5%2F20
1%2F2=%281%2F2%29%2810%2F10%29=10%2F20
So then,
2%2F5%2B1%2F4%2B1%2F2=8%2F20%2B5%2F20%2B10%2F20
2%2F5%2B1%2F4%2B1%2F2=%288%2B5%2B10%29%2F20
2%2F5%2B1%2F4%2B1%2F2=highlight%2823%2F20%29