35 + 15x = 65
15x = 65 - 35
15x = 30
x = 30 : 15
x = 2.
nếu sai mong mn sửa giúp!
35 + 15x = 65
<=> 15X = 65 - 35
<=> 15x = 30
<=> x = 30 : 15
<=> x = 2
Vậy x = 2
35+15x=65
15x=65-35
15x=30
x=30:15
x=2
vậy x=2
7x : 28 = 5
7x = 5 x 28
7x = 140
x = 140 : 7
x = 20.
Nếu sai mong sửa giúp!
\(35+15x=65\)
\(< =>15x=65-35\)
\(< =>15x=30\)
\(< =>x=\frac{30}{15}=2\)