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Sedaia [141]
3 years ago
7

Elimination of x-y=11 2x+y=19

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
6 0
Ggeasy

we can eliminate the y terms by adding the equations

x-y=11
<u>2x+y=19 +</u>
3x+0y=30

3x=30
divide by 3
x=10

subb ack
x-y=11
10-y=11
minus 10 both sides
-y=1
times -1
y=-1

(x,y)
(10,-1)
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