Question

calcule o valor das expessões numéricas
a) 45-{4 x [(9 x 12-14 x 7):(15- 5 x 2)}
b) 20:4+3x2-15:3
c) [25-(18:3)}x{5-{18-(4x5-4]}
d){38+{(143:11+7-5x2]}:6
URGENTE PRA AMANHÃ

Answer 1

A: 45-{4 x (108 -98) :(15 -10)

45-{4 X[ 10:5

45-{4 x 2}

45-8=

37

B:5 +6-5=

6

C:{25-6} x {5 -[18-16

{19} x {5-2

19×3=

57

D:{38+{13+7-10} :6

{38 +10}:6

48:6=

8