Xiao Ming is 7 years old, and his grandfather is 70 years old. In a few years, will his grandfather be eight times as old as Xiao Ming?

Xiao Ming is 7 years old, and his grandfather is 70 years old. In a few years, will his grandfather be eight times as old as Xiao Ming?

In another x years, my grandfather is eight times as old as Xiao Ming
70+X=8(7+X)
70+X=56+8X
7X=14
X=2
Two years later, my grandfather is eight times as old as Xiao Ming