Răspunsuri

2014-05-12T09:15:29+03:00
-1+5*[(-4-2)*(-5)-17]-(18-10*(7)=
=-1+5*[(-6)*(-5)-17]-(18-70)
=-1+5*(30-17)-(-52)
=-1+5*13+52
=-1+65+52
=64+52
=116



{-3*[-7*(15-10-2)-3*(-8)+5}+20-4}*(+2)=
={-3*[-7*3-3*(-8)+5]+20-4}* 2
=[-3*(-21+24+5)+20-4]*2
=(-3*8+20-4)*2
=(-24+20-4)*2
=(-4-4)*2
=-8*2
=-16

Prima am facut-o eu si da 8, iar a doua nu . Multumesc :*
CU PLACERE