2 years ago

2x+5y=-21 , -2x+3y+-27

Mathematics

1 answer:

Elis [28]2 years ago

8 0

Answer:

x=4.5 and y= -6

Step-by-step explanation:

2x+5y= -21

-2x+3y= -27

add the two equations: 8y= -48

y=-48/8= -6

sub for y in 2x+5y= -21

2x + 5(-6)=-21, 2x-30= -21

2x= -21+30= 9

x= 9/2=4.5

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