Answer:
x=5
Step-by-step explanation:
This one does not follow the correct rules in math but this is very helpful for "limited time" exams.
3
x
+
6
=
21
Transfer +6 to other side of the equation, converting the sign to opposite one making +6 to -6
3
x
=
21
−
6
Subtract
3
x
=
15
Divide it by the number with
x
3
x
3
=
15
3
Final answer
x
=
5
