👤

s



ocotiti va rog |(-7pe trei la a doua ):35pe54-2,8(x)(-25:1,25)=


Răspuns :

=-7/3^2*[(3^3*2)/(5*7)]-28/10*(-25*100/125)=-6/5+14/5*20=(-6+280)/5=274/5=54.8
2,8=28/10;1,25=125/100
⇒(-7/3²)÷35/54-28/10×(-25÷125/100)=(-7/9)×54/35-28/10×(-25×100/125)=
=-6/5-54=-6/5-270/5=-276/5