Question

Tìm x:

a) 2x + 3x = 1505

b) 5x - x =4088 

Giải giúp mình nha. Cảm ơn nhiều !

Answer 1

a)\(2x+3x=1505\)

=>\(x\left(2+3\right)=1505\)

=>x.5=1505

=>x=1505:5

=>x=301

b)\(5x-x=4088\)

=>x(5-1)=4088

=>x.4=4088

=>x=4088:4

=>x=1022

Answer 2

a) 2x + 3x = 1505

(2 + 3)x = 1505

5x = 1505

x = 1505 : 5

x = 301

b) 5x - x = 4088

5x - 1x = 4088

(5 - 1)x = 4088

4x = 4088

x = 4088 : 4

x = 1022

Answer 3

a) 2x + 3x = 1505

   (2 + 3) x = 1505

 5x  = 1505

x = 1505 : 5

x = 301

b) 5x - x = 4088

(5 - 1) x = 4088

4x = 4088

x = 4088 : 4

x = 1022

Answer 4

a, 2x + 3x = 1505

x( 2 + 3 ) = 1505

x5 = 1505

x = 1505 : 5

x = 301

 Vậy x = 301

b, 5x - x = 4088

5x - 1x = 4088

( 5 - 1 )x = 4088

4x = 4088

=> x = 4088 : 4

=> x = 1022

 Vậy x = 1022

Answer 5

a, 2x + 3x = 1505

x( 2 + 3 ) = 1505

x5 = 1505

x = 1505 : 5

x = 301

 Vậy x = 301

b, 5x - x = 4088

5x - 1x = 4088

( 5 - 1 )x = 4088

4x = 4088

=> x = 4088 : 4

=> x = 1022

 Vậy x = 1022

Answer 6

a) 2x + 3x= 1505

5x = 1505

=> x = 1505 : 5

=> x = 301

b) 5x - x = 4088

4x = 4088

=> x = 4088 : 4

=> x = 1022