Question

What is the simple way of doing algebra ???

Answer 1

here is how to solve the question in the above example using inverses:

1. First, write down the expression:
2. 2a + 3 = 7.
3. Then, undo the + 3 by subtracting 3. Remember, you need to do it to BOTH sides!
4. 2a + 3 - 3 = 7 - 3,
5. so 2a = 4.
6. Undo the multiply by 2 by dividing by 2, again on both sides:
7. 2a ÷ 2 = 4 ÷ 2.