Question

Afla termenul necunoscut :

(a+78): 5+312=332

a :126=7 r 2

9 X a+39=555:5

Answer 1

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

=================

a:126=7 r 2
a=126*7+2
a=884

=================

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