Răspuns:
a). =14(12-7)-5x13=14x5-5x13=5(14-13)=5x1=5
b). = 7(49+31-50)=7x30=210
c). =32(25+11)-36x30=32x36-36x30=36(32-30)=36x2=72
d). 11(99+13)-112=
=11x112-112=112(11-1)=112x10=1120
e).= 177(36-31)-77x5=177x5-77x5=5(177-77)=5x100=500
f). =32(1+15+84)=32x100=3200
Explicație pas cu pas: