Question

8. Calcule, simplificando: a) 1/3 × 8/2
b) 4 : 2/3
c)5/3×2/5×7/2​

Answer 1

Resposta:

a)26/6 = 13/3

b)14/3

c)167/30

Explicação passo-a-passo:

a)1/3×8/2 = (6÷3×1)+(6÷2×8)/6 = (2×1)+(3×8)/6 = 2+24/6 = 26/6 = 26÷2/6÷2 = 13/3

b)4÷2/3 = 4/1÷2/3 = (3÷1×4)+(3÷3×2)/3 = (3×4)+(1×2)/3= 12+2/3 =14/3

c)5/3×2/5×7/2 = (30÷3×5)+(30÷5×2)+(30÷2×7)/30 = (10×5)+(6×2)+(15×7)/30 = 50+12+105/30 = 62+105/30 = 167/30