a ) \(2x+3x=1505=x\left(2+3\right)=1505=>5x=1505\)
\(=>x=301\)
b ) \(5x-x=4088=>x\left(5-1\right)=4088\)
\(=>4x=4088=>x=1022\)
a) 2x + 3x = 1505
x ( 2 + 3 ) = 1505
x . 5 = 1505
x = 1505 : 5
x = 301
b) 5x - x = 4088
5x - 1x = 4088
( 5 - 1 ) x = 4088
4x = 4088
x = 4088 : 4
x = 1022
2x+3x=1505
5x =1505
x =1505:5
x =301
Vậy x=301
5x-x=4088
4x =4088
x =4088:4
x =1022
Vậy x=1022
2x+3x =1505
5x =1505
x =1505:5
x =301
5x-x= 4088
4x = 4088
x = 4088:4
x = 1022
