a-7= a-2
---- ----
10 8
a=????
3 answers
a-7 is divided by 10 = a-2 divided by 8
write it this way:
(a-7)/10 = (a-2)/8
cross-multiply
10a - 20 = 8a - 56
2a = -36
a = -18
(a-7)/10 = (a-2)/8
cross-multiply
10a - 20 = 8a - 56
2a = -36
a = -18
Thanks