# 1 Answer

Solution to your problem: i.e y - 39 = -48

Basic Method:

1. First add 39 on both sides

i.e y - 39 +39 = -48 + 39, then your result will be

y = -9

Alternative Method:

For this method, you should know the concept of inversion of sign.

Remember, when you change the side of the number or any variable, the sign change as follows:

1. positive sign [ + ] is changed to negative sign [ - ] and vice-versa

2. multiplication [ × ] is changed to division [ / ] and vice-versa

So, in above question, if you changed the side of - 39, then it will be +39 on other side

i.e y = -48 + 39

So that the value of y = -9

Hope this idea has help you to some extent. Please share the idea with your friends too.

Note: The basic method is cumbersome when the given condition is complex but it is the best method to solve any kind of equation.

13 years ago. Rating: 0 | |