Question

N x 5 + N x 9 + N x 28 - N x 33 = 7900

tim N

 

Answer 1

​N * 5 + N * 9 + N * 28 - N * 33 = 7900

​N * ( 5 + 9 + 28 - 33 ) = 7900

N * 9 = 7900

​N = 7900 : 9

Tick nha

Answer 2

N x 5 + N x 9 + N x 28 - N x 33 = 7900

N x ( 5 + 9 + 28 - 33 ) = 7900

N x 9 = 7900

N = 7900 : 9

N = đề sai

Answer 3

N*5+N*9+N*28-N*33=7900

N*(5+9+28-33)=7900

N*9=7900

N=7900:9

N=877,7777778

tick nha