x + 20 = 40 + 10
x + 20 = 50
x = 50 - 20
x = 30
k mk mk k lại
\(x+20=40+10\)
\(x+20=50\)
\(x=50-20\)
\(x=30\)
\(Tk\) \(mk\) \(mk\) \(tk\) \(lai\)
x + 20 = 40 + 10
x + 20 = 50
x = 50 - 20
X = 30
Vậy x=30
x+20=40+10
x+20=50
x =50-20
x =30
K NHA BAN
x + 20 = 40 + 10
x + 20 = 50
x = 50 -20
x = 30
tk mk nhe mk tk bn roi
x + 20 = 40 + 10
x + 20 = 50
x = 50 - 20
x = 30
x + 20 = 40 + 10
x + 20 = 50
x = 50 - 20
x = 30
Vậy x = 30
x+ 20 = 40 + 10
=> x+ 20 = 50
=> x= 30
đáp số x= 30
x + 20 = 40 + 10
x + 20 = 50
x = 50 - 20
x = 30