Question

a)(-5)(-7 +12)+(-3)(-24 + 36) =;
b) (- 12 + 7)(– 7) + (-24 + 15) (-3)=;
c)(- 14 +24)(-11) + (-15)(-24 + 13 - 15)=;
d) (-16 +24)(-6) +(-6)(-70 + 24 + 35) =;
e) (-7)(-24 + 19) + (-5)(- 12 + 50 - 36) =;
1) 6-24 + 17 + 12).(-2)(-3) + (-8)(- 48 + 23 +15) =​

Answer 1

Răspuns:

a) (-5)(-7+12)+(-3)(-24+36)= (-5)×5×(-3)×12=25×3×12=300×3=900

b)(- 12 + 7)(– 7) + (-24 + 15) (-3)= -5 × (-7) -9×(-3)=35-9×(-3)=35+27=62

c)(- 14 +24)(-11) + (-15)(-24 + 13 - 15)=10×(-11)+(-15)×(-26)= -110+(-15)×(-26)= -110+390 =280

d)(-16 +24)(-6) +(-6)(-70 + 24 + 35) =8×(-6)+(-6)×(-11)= -8×6+6×11 = -6(8-11) = -6(-3)=18

e)(-7)(-24 + 19) + (-5)(- 12 + 50 - 36) = (-7)×(-5)+(-5)×2=7×5-5×2= -5 (-7+2)= -5×(-5)=25

f)6-24 + 17 + 12×(-2)(-3) + (-8)(- 48 + 23 +15) =6-24+17+72+(-8)×(-10)=6-24+17+72+80=151