Question

Elimine os parentes e calcule:
A) 7-(-6)-8

B)-8+(-6)-(+3)

C)5-6-(+7)+1

D)-28+7(+12)+(-1)-6

E)-21-7-6(-15)-2-(-10)

F)10-(-8)+(-9)-(-12)-6+5

Answer 1

Elimine os parentes e calcule:


A) 7-(-6)-8=>7 +6 -8=> 13 - 8=>5

B)-8+(-6)-(+3)=>-8 -6-3=> -14-3=> -17

C)5-6-(+7)+1 =>5-6-7+1=>-1-7+1=>-8+1=>-7

D)-28+7(+12)+(-1)-6=>-28+7+12-1-6=>-21+12-1-6=> -9-1-6=>-10-6=>-16

E)-21-7-6(-15)-2-(-10)=>-21-7-21+10=>-28-21+10=>- 49+10=>-39

F)10-(-8)+(-9)-(-12)-6+5=>10+8-9+12-6+5=>

18-9+12-6+5=>9+12-6+5=>21-6+5=>15+5=>20