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Determinați nr. nat. X stiind ca 2^31+2^30+2^29=X×2^28 va rooooooog dau coroana

Răspuns :

2³¹+2³⁰+2²⁹ = x*2²⁸
2²⁸*(2³+2²+2)=x*2²⁸
2²⁸* (8+4+2)=x*2²⁸
x*2²⁸=2²⁸* 14
x=14
2^31+2^30+2^29=X×2^28
2^29×(2^2+2^1+2^0)=X×2^28
2^29×(4+2+1)=X×2^28
2^29×7=X×2^28      : 2^28
2^1×7=X
X=14