Question

15-2x=6x+20, solve for x

Answer 1

x=−5/8

Decimal Form: x = -0.625

Answer 2

`x= -(5)/(8)` or
`-0.625`.

Explanation:

1. Write the expression.

`15-2x=6x+20`

2. Substract 15 from both sides of the equation.

`15-2x-15=6x+20-15\\ \\-2x=6x+5`

3. Substract 6x from both sides of the equation.

`-2x-6x=6x+5-6x\\ \\-8x=5`

4. Divide by -8 on both sides of the equation.

`(-8x)/(-8) =(5)/(-8) \\ \\x=-(5)/(8)`

5. Express your result.

`x= -(5)/(8)` or
`-0.625`.