Question

Determinați nr x Știind ca 2 la 31+2 la 30 +2 la 29=x•2 la 28

Answer 1

* [tex] 2^{31}+2^{30}+2^{29}=X*2^{28} \\ 2^{28}(2^{3}+2^{2}+2)=2^{28}*x \\ 2^{28}*(8+4+2)=2^{28}*x \\2^28*14=2^{28}*x \\ x=14 [/tex]

Answer 2

2^29 (4+2+1)=x*2^28, impartim prin x^28
2*7=x
x=14