Question

Calculeaza in doua moduri:
A=-2-(4-6)
B=-3-(-2-5)-(8-10)
C=-25-(-12+8)-(-5+11)
D=14-(7-3+14)-(-10+5)

Answer 1

Răspuns:A=-2-(4-6)=-2-(-2)=-2+2=0

A=-2-(4-6)=-2-4+6=-6+6=0

B=-3-(-2-5)-(8-10)=-3-(-7)-(-2)=-3+7+2=4+2=6

-3-(-2-5)-(8-10)=-3+2+5-8+10=-1+5-8+10=4-8+10=-4+10=6

C=-25-(-12+8)-(-5+11)=-25-(-4)-(+)6=-25+4-6=-21-6=-27

c=-25-(-12+8)-(-5+11)=-25+12-8+5-11=-13-8+5-11=-21+5-11=-16-11=-27

D=14-(7-3+14)-(-10+5)=14-(+18)-(-5)=14-18+5=-4+5=1

D=14-(7-3+14)-(-10+5)=14-7+3-14+10-5=7+3-14+10-5=10-14+10-5=-4+10-5=6-5=1

Explicație pas cu pas: