Question

Resolva as expressões numéricas:

a) 7x5-12+9=

b) 45-(4x7-5x5)=

c) 16+3x7-11=

d)12+[35-(4x8-15)]=

e)7x9+4x6-37=

f)65-7x6+18-5=

Answer 1

a) 35-12+9=
   23+9= 32

b)45-(28-25)=
   45-3= 42

c) 16+21-11=
     37-11=26

d) 12+[35-(32-15)]=
    12+[35-17]=
    12+18=30

e) 63+24-37=
    87-37=50

f)65-42+18-5=
    23+18-5=
    41-5= 36