Ask your own question, for FREE!
Mathematics 51 Online
OpenStudy (anonymous):

Please fix these problems I will give a star. Questions down below

OpenStudy (anonymous):

jimthompson5910 (jim_thompson5910):

In the first one you can use substitution

jimthompson5910 (jim_thompson5910):

2x-3y = 26 2x-3(5x) = 26 ... replace y with 5x (works because y = 5x is given as the first equation) 2x-15x = 26 -13x = 26 x = ??

OpenStudy (anonymous):

-2

jimthompson5910 (jim_thompson5910):

yes

jimthompson5910 (jim_thompson5910):

now plug that into any equation with x & y in it, then solve for y the easiest is y = 5x

OpenStudy (anonymous):

-2y/-2 =-5/-2=2?

OpenStudy (anonymous):

for -5 i mean 5

jimthompson5910 (jim_thompson5910):

what do you mean?

OpenStudy (anonymous):

oh wait, I messed up. hold on

OpenStudy (dayakar):

1)substitute x= -2 in y=5x y= 5*(-2) y= -10

OpenStudy (dayakar):

2) 2x +5y=14 -----I x-3y=4-----------II multiply equation II with 2 and sutract from eq I you will get ,y=6/11

OpenStudy (dayakar):

substitute y= 6/11,in equation II x-3*6/11=4 x-18/11=4 x= 4+18/11 x= (44+18)/11 x= 62/11

OpenStudy (dayakar):

are u there

OpenStudy (anonymous):

I need help with the third problem

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!