Question

Find the value of A and B where A+B =60 and A-B = 30​

Answer 1

Answer:

A = 45, B = 15.

Step-by-step explanation:

A- B = 30, (1)

A + B = 60. (2)

Once you see two equations like (1) and (2), add them immediately.

You will get 2A = 30 + 60 = 90 ---> A =  = 45.

Thus you just found one unknown.

Now from (2) B = 60 - A = 60 - 45 = 15.

The problem is solved. A = 45, B = 15.