Question

please tell the answer​

Answer 1

Answer:

solved

Step-by-step explanation:

3y+x-12=0---1

-9y+x=0----2

rearranging equation one

i.e 3y+x=12

3y+x=12

-9y+x=0. add one more minus sign it will

12y=12 became plus and x wiil becmace miuns and gets cancelled

y=12

put in equation one

36+x=12

x=36

12

x=3