Answer: x = 0 , y = -4
Explanation:
4x - 3y = 12 } Equation 1
y = 7x - 4 } Equation 2
We can substitute the value of y from equation 2 in equation 1:
4x - 3(7x - 4) = 12
4x - 21x + 12 = 12
-17x = 12-12
-17x = 0
x = 0
Now we can substitute this value of x in equation 2 :
y = 7x - 4 } Equation 2
y = 7·0 - 4 = -4
Answer: x = 0 , y = -4
Spymore