Mathematics
15 Online
OpenStudy (anonymous):
Perform the indicated operations.
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
OpenStudy (anonymous):
anyone?
OpenStudy (anonymous):
@pooja195
OpenStudy (anonymous):
First get common denominator.
OpenStudy (anonymous):
20?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
Yeap, thats a great way to start.
OpenStudy (anonymous):
ok now what?
OpenStudy (anonymous):
Combine it into a single fraction.
OpenStudy (anonymous):
a+2+a-1+a-3?
OpenStudy (anonymous):
You got: \[\frac{a+2}{4b}-\frac{a-1}{10b}+\frac{a-3}{5b}\]\[=\frac{5(a+2)}{20b}-\frac{2(a-1)}{20b}+\frac{4(a-3)}{20b}\]
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
ok
OpenStudy (anonymous):
Now we have the same denominator. Now we want to get them into a single fraction. So we get:
\[\frac{5(a+2)-2(a-1)+4(a-3)}{20b}\]
OpenStudy (anonymous):
Now the next step would be to simplify the nominator.
OpenStudy (anonymous):
5a+10-2A+2+4A-12
OpenStudy (anonymous):
Correct
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
Try so simplify it further
OpenStudy (anonymous):
7A
OpenStudy (anonymous):
Yes, so the final answer is \[\frac{7a}{20b}\]
OpenStudy (anonymous):
7A/20B?
OpenStudy (anonymous):
Yea! good job :)
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
THANKS I HAVE ONE MORE QUESTION
OpenStudy (anonymous):
sure
OpenStudy (anonymous):
Solve the inequality.
OpenStudy (anonymous):
OpenStudy (anonymous):
these are ones i don't understand
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
Okay, lets get common denominator first.
OpenStudy (anonymous):
6
OpenStudy (anonymous):
Yeap, so we get\[\frac{2x}{6}+\frac{3(1-x)}{6}\ge1\]
OpenStudy (anonymous):
Lets put it into a single fraction.
OpenStudy (anonymous):
\[\frac{2x+3(1-x)}{6}\ge1\]
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
Try and simplify the nominator