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x+x:2+x:4+x:8= nr de 3 cifre


Xx2x4x8 Nr De 3 Cifre class=

Răspuns :

x+x÷2+x÷4+x÷8=abc

8(x÷8)+4(x÷8)+2(x÷8)+x÷8=abc

15(x÷8)=abc

x={56, 64, 72, ..., 528}

abc={105, 120, 135, ..., 990}