Question

calcule a expressão 4/3+7/5.(0,5+4/9)-0,2

Answer 1

Resposta:

221/90=2,4555...

Explicação passo-a-passo:

4/3+7/5.(0,5+4/9)-0,2=

4/3+7/5.(5/10+4/9)-2/10=

4/3+7/5.(1/2+4/9)-1/5=

4/3+7/5.17/18-1/5=

4/3+119/90-1/5= m.m.c é 90

(120+119-18)/90=

(239-18)/90=

221/90= 2,4555...

1/2+4/9 m.m.c=18

(9+8)/18=17/18