Hi
We need to solve 3x-7=2 for x
Let's start by adding 7 to both sides
3x-7+7=2+7
3x=9
Now just divide both sides by 3 so we can find the value for x
3x/3=9/3
x=3
Now substitute 3 for x in 4x-y=5 so we can find the value for y
4x-7=5
4(3)-y=5
-y+12=5
Add -12
-y+12-12=5-12
-y=-7
Now divide both sides by -1 so we can find the positive value for y
-y/-1=-7/-1
y=7
The answer is A
(3,7)
Good luck:0
