Answer:
y = -5 and x = 2
Explanation:
substitute y in the first equation with x-7 from the second equation
x-7 = -4x+3
combine like terms
5x = 10
solve for x
x = 2
plug in x into either equation to solve for y (I used the second equation, but you can use either)
y = 2-7
y =-5