Question

How do you solve `7x - 2= 3x + 18`?

Answer 1

`x=5`

Explanation:

`7x-2=3x+18`

Rearrange the equation putting the numbers on one side and the pronumerals on the other side
`7x-3x=18+2`

Simplify
`4x=20`

Divide both sides by 4
`x=5`

Answer 2

`x=5`

Explanation:

Given -

`7x-2=3x+18`

Add `-3x` on both sides

`7x-2-3x=3x+18-3x`
`7x-2-3x=cancel(3x)+18cancel(-3x)`
`4x-2=18`

Add `2` on both sides

`4x-2+2=18+2`
`4xcancel(-2)cancel(+2)=18+2`
`4x=20`

Divide both sides by `4`

`(4x)/4=20/4`
`(cancel4x)/cancel4=20/4`
`x=5`