5x – 7 = 3x + 15
\(5x-3x=15+7\)
\(2x=22\)
\(x=11\)
5x-7=3x+15
5x=3x+15+7
5x=3x+22
5x-3x=22
2x=22
x=22:2
x=11
Vậy x=11
5x - 3x = 15 + 7
2x = 22
x = 11
Tìm x :
5x - 7 = 3x + 15
=> 5x - 3x = 15 + 7
=> 2x = 22
=> x = 22 ÷ 2
=> x = 11
Vậy x = 11
Học tốt
5x-7=3x+15
<=> 5x-7-3x-15=0
<=> 2x-22=0
<=> 2x=22
<=> x=11