Question

ajutorrrrr va roggg!!!!!!

Answer 1

c) 1000-c*3+197=1197-c*3
(1197-c*3):137=6
1197-c*3=6*137
1197-c*3=822
1197-822=c*3
375=c*3
375:3=c
c=125
b)c+525:15=125+35=160
160:b=32
b=160:32=5
a)721-346=375
375:b+c=a
375:5+125=a
73+125=a
a=198