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5 x [39 - 6 x ( 1707 - 63 x27 )] = ? cat ne da?

Răspuns :

1) 63*27=1701
2)1707-1701=6
3)6*6=36
4)39-36= 3
5)5*3=15
5x[39-6x(1707-63x27)]=
5x[39-6x(1707-1701)]=
5x(39-6x6)=
5x(39-36)=
5x3=15