Toán a)Ix-3,5I=7,5 b)I2x-4I=I5-8xI c)3x+Ix-2I=7 24/07/2021 By Rose a)Ix-3,5I=7,5 b)I2x-4I=I5-8xI c)3x+Ix-2I=7
Ix-3,5I=7,5 đk x>=1
x-3.5=7.5
x=7.5+3.5
x=11
Đó