Question

help!!!!!
-x+y=12
x+2y=3

Answer 1

Add the equations:
0+3y=15
y=5

Answer 2

-x+5=12
-x=12-5
x=-7

Answer 3

thanks

Answer 4

to check your answer
\[-(-7)+(5)=12\]
\[(-7)+2\times(5)=3\]

Answer 5

system of inequality y less than equal to +3
y greater = to -x-2

Answer 6

\[y≤+3\]\[y≥-x-2\]

Answer 7

yes