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Mathematics 8 Online
OpenStudy (mathsucks321):

http://prntscr.com/dgyrv8

OpenStudy (mathsucks321):

@3mar

OpenStudy (3mar):

Well, I am here. Can you share your works/steps, please?

OpenStudy (3mar):

It is easy one by the way!!

OpenStudy (mathsucks321):

It kind of is wait let me figure it out

OpenStudy (mathsucks321):

7a + b = 5.20 11a + b = 7.20

OpenStudy (mathsucks321):

7 and 11 are 4 away

OpenStudy (mathsucks321):

So the cost increased by 2 dollars

OpenStudy (3mar):

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