Question

considere que A= 2/3 - 1,444... e B= 0,7 - 0,777... determine A : B

Answer 1

A= 2/3 - 1,444... =2/3-(1+4/9)

A=2/3-1,444....=2/3-(13/9)

A=2/3-13/9

A=2.9-13.3/3×9

A=18-39/27

A=-21/27

A=-7/9
_________


B= 0,7 - 0,777... =

B=7/10-(7/9)

B=7/10-7/9

B=7.9-7.10/9.10

B=63-70/90

B=-7/90
________


A÷B=-7/9÷(-7/90)

A÷B=-7/9×(- 90/7)

A÷B=9×90/7.7

A÷B=810/49


espero ter ajudado!

boa tarde!