Question

Afla numere necunoscute 1:a) 12:3+90:9+a=64*4 2:b) 58*b+25*6-72:8=181

Answer 1

a) 12:4+90:9+a=64*4
3+10+a=256
13+a=256.
a=256-13=243
b) 58*b+25*6-72:8=181
58*b+150-9=181
58*b+141=181
58*b=181-141
58*b=40
b=40:58