Question

-3x+y=6 X+2y=-2
do it in substitution method ​

Answer 1

Answer:

x=-2,y=0.

Step-by-step explanation:

y=6+3x by equation 1.

substitute y in eq(2)

x+2(6+3x)=-2

7x=-14

x=-2 and y=6+3*(-2)=0

Answer 2

Answer:

X=-2 where Y=0

Step-by-step explanation:

-3X+Y=6•••••••••••••(1)

X+2Y=-2•••••••••••••(2)

(2)*3

we get

3X+6Y=-6••••••••••(3)

add (3) with (1)

3X+6Y=-6

-3X+Y=6

Y=0

so;Y=0

put this value in equation (1)

-3X+0=6

x=-2

x=-2;y=0

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if we put this value of x&y in any equation we can check it right or wrong

from (2)

x+2y=-2

-2+0=-2[after putting x & y value]

-2=-2 means it's ok