Question

Afla nr necunoscut : 1.(c-104+2)×5+3=98
2. 36-42:e:(15:3-4:1)-20=10
3. 11-(7×5-9×9:f:3):8=7
4.22-5×(38-4×g)=12
5. 26+(6×h-7×3):9=27

Answer 1

1) cx5-520+10+3=98
cx5=98+520-10-3
cx5=618-10-3
cx5=608-3
cx5=605
c= 605:5
c=121