Question

How do you solve `9x - 6= 8( x - 1) + 1`?

Answer 1

`x=-1`

Explanation:

Using the "D rule":
Given `a,b,c` where `a(b+c)=ab+ac`

You may write:

`8(x-1)+1=8x+8(-1)+1=8x-8+1=8x-7`

Therefore:

`9x-6=8(x-1)+1=8x-7`
`=> x=-1`