Question

e) 124 x 31 1. Resolva as expressões numéricas abaixo: a) [30 + 2x (5-3)] x 2-10 = b) 9+ [4+2 x (6-4) + (2+5)]- 8 = c) {10+ [5 x (4 + 2 x 5)-8] x 2} - 100 = d) 60 + 2 x {[4 x (6 + 2) - 10] + 12} = e) 1000 - [(2 x 4-6) + (2 + 6 x 4)] = f) [40+2x (7-5)] x2-20 = g) 80-5x (28-6 x 4) + 6 - 3 x 4 = e ) 124 x 31 1. Resolva as expressões numéricas abaixo : a ) [ 30 + 2x ( 5-3 ) ] x 2-10 = b ) 9+ [ 4 + 2 x ( 6-4 ) + ( 2 + 5 ) ] - 8 = c ) { 10+ [ 5 x ( 4 + 2 x 5 ) -8 ] x 2 } - 100 = d ) 60 + 2 x { [ 4 x ( 6 + 2 ) - 10 ] + 12 } = e ) 1000 - [ ( 2 x 4-6 ) + ( 2 + 6 x 4 ) ] = f ) [ 40 + 2x ( 7-5 ) ] x2-20 = g ) 80-5x ( 28-6 x 4 ) + 6 - 3 x 4 =​

Answer 1

Explicação passo-a-passo:

1. Resolva as expressões numéricas abaixo:

a) [30 + 2x (5-3)] x 2-10 =

[30+2.(2)].2-10=

[30+4].2-10=

[34].-8=

−272

b) 9+ [4+2 x (6-4) + (2+5)]- 8 =

9+[4+2.(2)+(7)]-8=

9+[4+4+7]-8=

9+[8+7]-8=

9+[15]-8=

24-8=

16

c) {10+ [5 x (4 + 2 x 5)-8] x 2} - 100 =

{10+[5.(4+10)-8].2}-100=

{10+[5.(14)-8].2}-100=

{10+[70-8].2}-100=

{10+[62].2}-100=

{10+124}-100=

{134}-100=

34

d) 60 + 2 x {[4 x (6 + 2) - 10] + 12} =

60+2.{[4.(8)-10]+12}=

60+2.{[32-10]+12}=

60+2.{[22]+12}=

60+2.{34}=

60+68=

128

e) 1000 - [(2 x 4-6) + (2 + 6 x 4)] =

1000-[(2.-2)+(2+24)]=

1000-[(-4)+(26)]=

1000-[22]=

978

f) [40+2x (7-5)] x2-20 =

[40+2.(2)].2-20=

[40+4].2-20=

[44].-18=

−792

g) 80-5x (28-6 x 4) + 6 - 3 x 4 =

80-5.(28-24)+6-12=

80-5.(4)+(-6)=

80-20+(-6)=

80-14=

66

e ) 124 x 31 1= 38564

Espero ter ajudado ♥️.