Question

8x = 5y, 13x = 8y +1

Answer 1

Heya !

Here is your answer =================================================================================

=> 8x=5y 
13x=8y+1 

8x-5y=0 
13x-8y=1 

multiply first equations by 8, and second equation by 5, so that the co-efficient of y gets to be the same 

we have 

64x-40y=0 
65x-40y=5 

subtracting 1 from 2, we have 
65x-40y - (64x-40y) = 5-0 
65x-40y-64x+40y=5 
x=5 

substituting, 8*5=5y 
40=5y 
y=8

Hope it helps !!! : )