Question

vă rog doar scrieți a, sau b!!! ​

Answer 1

Răspuns:

b este raspuns corect .

[(X+15)•10-100]:5+90=100

[(x+15)•10-100]:5=100-90

[(x+15)•10-100]=10•5

(x+15)•10=50+100

(x+15)=150:10

x+15=15

x=15-15

x=0

proba[(0+15)•10-100]:5+90=100

(15•10-100):5+90=100

50:5+90=100

10+90=100

100=100