Question

X x 7+ X x 12 =266

Answer 1

X x 7+ X x 12 =266

<=> X x ( 7+12)=266

<=> X x 19 = 266

<=> X= 266 : 19 = 14

Answer 2

`x xx 7 + x xx 12 = 266`

`x xx ( 7 + 12) = 266`

`x xx 19 = 266`

`x = 266 : 19`

`x= 14`

Answer 3

`x xx7+x xx12=266`

`=>x xx(7+12)=266`

`=>x xx19=266`

`=>x=266:19`

`=>x=14`

Vậy `x=14`

Answer 4

`=> x xx 19 = 266`

`=> x = 14`

Answer 5

X x 7 + X x 12 = 266

X x ( 7 + 12 )  = 266

X x 19            = 266

X                    = 266 : 19

X                    = 14