2x - 3y = 2, 4x + 7y = -9.

Mathematics

1 answer:

kodGreya [7K]3 years ago

6 0

Step-by-step explanation:if you like it press thank you ❤❤❤

2x-3y=2 4x+7y= -9

2x=2+3y

2x=2+3y

2 2

x=2+3y 4(2+3y) + 7y= -9

 2 2

8+12y + 7y= -9

2

8+12y+14y = -9

8+12y+14y= -18

26y= -26

26y = -26

y= -1

4x+7(-1)= -9

4x+(-7)= -9

4x-7= -9

4x = -2 now lets check,4(-1) + 7(-1)= -9 or 2(-1)-3(-1)=2

4 4 2 2

x=-1 -4 +(-7) = -9 -1-(-3)=2

2 2 -1+3=2

-2-7= -9 2=2

-9= -9

so the answer is x= -1 and y= -1

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