Asked by Anonymous

elimination method

1> 7x+15y=32
x-3y=20
Answered by bobpursley
multipy the second equation by 5, then add the equations.
Answered by Alex
can u help me with my homework
Answered by Anonymous
well i did as you said but my answer comes in fraction....can you help me say where i am wrong?

i did it in this way

7x+15y=32
5x-15y=100
----------
2x=132
x=132/2
x=66

then
x-3y=20
66-3y=20
-3y=20-66
-3y=-46
y=-46/3

now i know i am wrong. can someone please correct me plz....
Answered by DanH
You should be ADDING the 2 equations...so it should be 12x = 132, instead of 2x = 132
Answered by guerline



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