Question

afla valoarea lui a: 400÷{[1140-(5045÷a-909)]÷130}÷10=5

Answer 1

400÷{[1140-(5045÷a-909)]÷130}÷10=5

400÷{[1140-(5045÷a-909)]÷130}=5×10

400÷{[1140-(5045÷a-909)]÷130}=50

[1140-(5045÷a-909)]÷130=400:50

[1140-(5045÷a-909)]÷130=8

1140-(5045÷a-909)=8×130

1140-(5045÷a-909)=1 040

5045÷a-909=1 140 - 1 040

5045÷a-909=100

5045÷a=100+909

5045÷a=1 009

a= 5 045 : 1 009

a=5

Answer 2

400÷{[1140-(5045÷a-909)]÷130}=50 => [1140-(5045÷a-909)]÷130=8=>
=> [1140-(5045÷a-909)]=1040=> 5045÷a-909=100=>
5045÷a=1009=>a=5045÷1009=> a=5