Question

(a+78):5+312=332
Va rog ajutor
9×a+39=555:5

Answer 1

(a+78):5+312=332
(a+78):5=332-312
(a+78):5=20
a+78=20x5
a+78=100
a=100-78
a=22

9xa+39=555:5
9xa+39=111
9xa=111-39
9xa=72
a=72:9
a=8