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3 years ago

X + y = 21 3x – 2y = -12

Mathematics

2 answers:

kondaur [170]3 years ago

8 0

Answer:

x = 6 y = 15

Step-by-step explanation:

If this is simultaneous equations

x+y=21

3x-2y= -12

-3(x+y=21)

1(3x-2y= -12)

-3x -3y= -63

3x-2y= -12

-5y= -75

y= -75/-5

y= 15

x+y=21

x+15=21

x=21-15

x=6

Varvara68 [4.7K]3 years ago

7 0

This is the answer !!!!!!!!!!!

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