Question

Resolva as seguintes expressões numéricas: a) 5 x (3 + 4 - 9) + 62 = b) 40 = 5+ (136 - 4) +1 = c) 72-32 + (3 x 8 + 40) =​

Answer 1

Explicação passo-a-passo:

a:

faz a distributiva 5(3+4-9)

15+20-45+62

35-45+62

-10+62

52 //

b:

5(136-4)+1=40

680-20+1

659=40

619//

c:

72-32+(3.8+40)

72-32+24+40

40+24+40

104 //

Answer 2

a)

$5x\left(3+4-9\right)+62\\\\=-10x+62$

b)

$40=5+\left(136-4\right)+1\\\\40=138\\\\\mathrm{Os\:lados\:nao\:sao\:iguais}\\\\\mathrm{Falso}$

c)

$72-32 + (3 x 8 + 40) =\\\\=72-32+3x\cdot \:8+40\\\\=72-32+24x+40\\\\=24x+72-32+40\\\\\mathrm{Somar/subtrair:}\:72-32+40=80\\\\=24x+80$