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seropon [69]
3 years ago
12

Omg someone PLEASE help

Mathematics
1 answer:
zheka24 [161]3 years ago
3 0
1. we can add them to eliminate y's

3x-4y=-16
<u>-x+4y=24 +</u>
2x+0y=8

2x=8
divide by 2
x=4

sub back
-x+4y=24
-4+4y=24
add 4 both sides
4y=28
divide by 4
y=7

(x,y)
(4,7)




3.
add them to eliminate y's

-5x+3y=12
<u>-2x-3y=-33 +</u>
-7x+0y=-21

-7x=-21
divide both sides by -7
x=3

sub back
-2x-3y=-33
-6-3y=-33
add 6 to both sides
-3y=-27
divide both sides by -3
y=9

(x,y)
(3,9)




1. (4,7)
3. (3,9)
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