Question

[Phan Phúc Khang]

Câu 7:

x- 14 + x +54 + x + 20= 300

Answer 1

[⭐Hannie⭐]

`x-14 +x+54+x+20=300`

`=> (x+x+x)+(-14+54+20)=300`

`=>3x+60=300`

`=>3x=240`

`=>x=240:3`

`=>x=80`

Vậy `x=80`

` @ \color{yellow}{Le_mon}`

Answer 2

[Hà Minh]

x = 80