Question

va rog frumos, dau coroana​

Answer 1

Răspuns:

a) -5×[3×(-5)-2×(-7)+9×(-3)] = -5×[-15-(-14)+(-27)] = -5×(-15+14-27) = -5×(-1-27) = -5×(-28) = 140

b) [(-5)×(-6)-7]×[-10-3×(-4)] = (30-7)×[-10-(-12)] = 23×(-10+12) = 23×2 = 46

c) -6-[5×(-4)+3-2]×[-1+(-2)×(-3)] = -6-(-20+1)×(-1+6) = -6-(-19)×5 = -6-(-95) = -6+95 = 89

d) [-9-(-3+5)+(7-6+6)-(-10+12)]×(-5)-7×(-10) = (-9-2+7-2)×(-5)-(-70) = (-11+5)×(-5)+70 = -6×(-5)+70 = 30+70 = 100

e) -9+(-3)×(-4)-179×(-47)×0×(-42)+3×(-9)×(-1)×(-30) = -9+(-12)-0+(-27)×(-1)×(-30) = -21+27×(-30) = -21-810 = -831

f) -245×(-137)+25×(-245)-245×12 = 33.565+(-6.125)-2.940 = 27.440-2.940 = 24.500