Question

1230:3(x-20)=10

Answer 1

410(x-20)=10

x-20=41

x=61

Answer 2

 

 

 

 

 

 

Answer 3

\(1230:3\left(x-20\right)=10\)
\(\Rightarrow3\left(x-20\right)=123\)
\(\Rightarrow x-20=41\)
\(\Rightarrow x=41+20\)
Vậy \(x=61\)

Answer 4

1230 : 3(x - 20) = 10

1230 : 3 = 410

x - 20 = 10 : 410 = 1/41

x = 1/41 +  20 = 821/41