Question

X + 27 + 7 x X = 187

Answer 1

x  + 27 + 7.x = 187

x + 7x + 27 = 187

8x = 187 - 27

8x = 160

x = 160 : 8

x = 20

Vậy x = 20

Answer 2

x + 27 +7 + x = 187

2x + 27 + 7 = 187

2x + 34 = 187

2x = 187 - 34

2x = 153

x = 153/2

Answer 3

`x+27+7 xx x=187`

`=>x xx 1 + 27 + 7 xx x = 187`

`=> x xx ( 1 + 7 ) = 187 - 27`

`=> x xx 8 = 160`

`=> x = 160:8`

`=>x=20` 

Vậy `x=20`

Answer 4

Ta có: x+27+7x=187

nên 8x=160

hay x=20