Question

a-7= a-2
---- ----
10 8

a=????

Answer 1

a-7 is divided by 10 = a-2 divided by 8

Answer 2

write it this way:

(a-7)/10 = (a-2)/8

cross-multiply
10a - 20 = 8a - 56
2a = -36
a = -18

Answer 3

Thanks