Question

Calculati:
a) |-20+12|
b) -8-(-6+10)
c) -18+(-6+1)
d) -18-2-{15-4-[10-(8-5)+(-3+9)]}
repede va roog​

Answer 1

Răspuns:

a) |-20+12|=|-32|=32

b)-8-(-6+10)=-8-(-16)=8+16=24

c)-18+(-6+1)=-18+(-7)=18-7=11

d)-18-2-{15-4-[10-(8-5)+(-3+9)]}=-18-2-{15-4-[10-3+(-12)]}=-18-2-[15-4-(10-3+(-12)]=-18-2-[15-4-(7+(-12)]=18-2-[15-4-(7-12)]=18-2-(15-4-(-5)=18-2-(11-(-5)=18-2-11+5=16-11+5=5+5=10 :)))

Answer 2

Răspuns:

a) | -20 + 12 | = | -8 | = 8

b) -8 - ( -6 + 10 ) = -8 - ( 4 ) = -8 - 4 = -12

c) -18 + ( -6 + 1 ) = -18 + ( -5 ) = -18 - 5 = -23

d) -18 - 2 - { 15 - 4 - [ 10 - ( 8 - 5 ) + ( -3 + 9 )]} =

= -20 - [ 11 - ( 10 - 3 + 6 )] = -20 - ( 11 - 13 ) =

= -20 - ( -2) = -20 + 2 = -18