Question

How do you solve `4( n + 8) - 3n = 42`?

Answer 1

`n=10`

Explanation:

`"distribute parenthesis on left side of equation"`

`4n+32-3n=42`

`rArrn+32=42`

`"subtract 32 from both sides"`

`ncancel(+32)cancel(-32)=42-32`

`rArrn=10`

`color(blue)"As a check"`

Substitute this value into the left side of the equation and if equal to the right side then it is the solution.

`4(18)-30=72-30=42`

`rArrn=10" is the solution"`