Answer: See explanation
Step-by-step explanation:
5x + 4y = 24 ....... equation i
x + 7y = 11 ......... equation ii
Multiply equation i by 1
Multiply equation ii by 5
5x + 4y = 24 ....... equation iii
5x + 35y = 55 ....... equation iv
Subtract equation iv from iii
-31y = -31
y = 31/31
y = 1
It has been proves that y= 1
Since y = 1
x + 7y = 11
x + 7 = 11
x = 11 - 7
x = 4
