Question

If 2x+5=8x, then 12x=?

Answer 1

`\boxed{10}`

Explanation:

`2x+5=8x`

`\sf Subtract \ 8x \ from \ both \ sides.`

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

`-6x+5=0`

`\sf Subtract \ 5 \ from \ both \ sides.`

`-6x+5-5=0-5`

`-6x=-5`

`\sf Divide \ both \ sides \ by \ -6.`

`\displaystyle (-6x)/(-6) =(-5)/(-6)`

`\displaystyle x =(5)/(6)`

`\sf Evaluate \ 12x.`

`\displaystyle 12 \cdot (5)/(6) =(60)/(6) =10`

Answer 2

10

Explanation:

2x+5=8x: First, you are going to subtract 2x from both sides of the equation.

5=6x: Now divide 6x from each side of the equation.

x=5/6: now plug in 5/6 by multiplying this number by 12.

Your final answer should be 10.