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Elza [17]
3 years ago
12

4x-y= -2 2х + Зу = 13

Mathematics
2 answers:
denis23 [38]3 years ago
6 0

Answer:

x = 1/2

y = 4

Step-by-step explanation:

4x - y = -2     --------------------(I)

2x + 3y = 13 --------------------(II)

Multiply equation (I) by 3 and then add

(I)*3         12x - 3y = -6

(II)            <u> 2x  + 3y = 13 </u>           {Now add and so y will be eliminated}

               14x         = 7

                          x = 7/14

x = 1/2

Plugin x = 1/2  in equation (I)

4*\frac{1}{2}-y = -2

  2 - y = -2

     -y  = -2 - 2

     -y = -4      

   y = 4

nordsb [41]3 years ago
6 0

Answer:

x=1/2

y=4

Step-by-step explanation:

4x-y=-2

-y=-4x-2

y=4x+2

2x+3y=13

2x+3(4x+2)=13

2x+12x+6=13

14x=7

x=1/2

y=4x+2

y=4(1/2)+2

y=2+2

Y=4

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