Question

How do you solve `4x+ 5 = 21`?

Answer 1

x=4

Explanation:

to solve for x, you should leave it alone on left-hand side. so

1. subtract 5 from both sides
   `4x+5-5=21-5`
   `4x=16`

2. divide both sides by 4
   `4x/4=16/4`
   `x=4`

remember: while solving equations, what you do to one side, you should do the same to the other