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crimeas [40]
2 years ago
10

3x + y = 4 x - 2y = 3

Mathematics
1 answer:
Anna007 [38]2 years ago
7 0
Eliminate y's
multily top equation by 2 and add to 2nd

6x+2y=8
<u>1x-2y=3 +</u>
7x+0y=11

7x=11
x=11/7
sub back


x-2y=3
11/7-2y=3
add 2y both sides
11/7=2y+3
minus 3 which is 21/7
-10/7=2y
divide by 2 or times 1/2
-5/7=y


(x,y)
( \frac{11}{7},  \frac{-5}{7})

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