Question

k+1+k+2+k+3=18

 

Answer 1

k+1+k+2+k+3=18

=>(k+k+k)+(1+2+3)=18

=>k x 3 + 6 =18

=>k x 3 = 18:6

=>k x 3 = 3

=>k=3:3

=>k=1

Answer 2

k+1+k+2+k+3=18

k+k+k+1+2+3=18

3xk+6=18

3xk=18-6

3xk=12

k=12:3

k=4

Mk lam nhanh nhat. K nhe

Answer 3

Ta có: k + 1 + k + 2 + k + 3 = 18 

Hay: 3k + 3 = 18

        3k      = 18 - 3

        3k      = 15

         k       = 15 : 3

         k       = 5

Answer 4

sorry mình nhầm

Answer 5

k+1+k+2+k+3=18

(3k)+(1+2+3)  =18

(3k)+6            =18

3k                  =18-6

3k                  =12

k                    =12:3

k                    =4