1. Put numbers that are on the same group.
3x = 18-15
(3 has x so it is separated from whole numbers 15 and 18)
(15 became negative because you moved it to the other side of the equals sign)
2. Simplify
3x = 18-15
3x = 3
3. Find x
Transfer 3 on 3x to the right side denominator (bottom)
That will make:
x = 3/3
4. Solve
3 divided by 3 is 1
ANSWER: x=1
