Question

(100x11+17x10-b:10):100=10

Answer 1

(100x11+17x10-b:10):100=10
(1100+170-b:10):100=10
(1270-b:10):100=10
1270-b:10=10x100
1270-b:10=1000
b:10=1270-1000
b:10=270
b=270x10
b=2700

facem proba inlocuind pe b cu 2700 ca sa ne iasa egalitatea 10=10

(100x11+17x10-b:10):100=10
(100x11+17x10-2700:10):100=10
(1100+170-270):100=10
1000:100=10
10=10, deci e bine

Answer 2

(100x11+17x10-b:10):100=10
(1100+170-c):100=10
(1270-c):100=10
d:100=10
d=100*10
d=1000
1270-c=1000
c=1270-1000
c=270
b:10=270
b=270*10
b=2700