2x + 20 = 29 + 11
2x + 20 = 40
2x = 40 - 20
2x = 20
x = 20 : 2
x = 10
2x + 20 = 29 + 11
2x + 20 = 40
2x = 40 - 20
2x = 20
x = 20 : 2
x = 10
\(2x+20=29+11\)
\(2x+20=40\)
\(2x=40-20\)
\(2x=20\)
\(x=20:2\)
\(\Rightarrow x=10\)
2x + 10 = 29 +11
2x + 10 = 40
2x = 40 - 10
2x = 30
x = 30 : 2
x = 15
2x tức 2 nhân x bn ạ
tk mk nha
2x = 40 -20 2x = 20 x =20 ;2 x = 10 nhớ k cho mình nhé bạn phạm linh