Question

resolva todas elas por favor

Answer 1

a) 12 × 3 + 5

   36 + 5

   41

b) 12 × (3 + 5)

   12 × 8

   96

c) 3/4 + 2 - 5 + 8/4

   (3 + 8 - 20 + 8)/4

   (19 - 20)/4

d) (2 - 3) × (2 + 1/2)

   (2 - 3) × [(4 + 1)/2]

   -1 × 5/2

   -5/2

e) {[2 + 3 + (1 - 2)] - 1} + 2

   {[2 + 3 - 1] - 1} + 2

   {4 - 1} + 2

   3 + 2

   5

f) 1/2 - (2 × 3)

   1/2 - 6

   (1 - 12)/2

   -11/2

Answer 2

Resposta:

a....12×3=36+5=38

b....12•3=36...12•5=60

.......36+60=96

c.....3/4 +2/1=3+8..../4=11/4-5/1=

11/4-20.../4=

d....-1×4+1.../2=

-1×5/2=

-2+5/2=-3/2

e..... [{2+3+(1-2)}-1]+2

[{2+3+(-1)}-1]+2

[{2+3+(-1)}-1]+2

4-1+2

3+2= 5

f.....1/2-(2×3)

......1/2-6.....1-12/2=-11/2

favor corrigir