# NCERT Class 7 Chapter 4 Simple Equation Exercise 4.3

A mathematical equation which represents the relationship of two expressions on either side of the sign is known as a simple equation. Transposing is nothing but the process of moving a term from one side to the other side of an equation is known as transposing. It is just like adding and subtracting a number of an equation from both the sides. Everyone thinks that maths is very difficult but that’s wrong if we understand it will be a very easy subject.

Construct 3 equations starting with x=2
Sol: x=2

Multiplying both sides by 5,
5x-3=10-3
5x-3=7____(2)
Dividing both sides by 2,
5x-3=7______(3)
2 2 2
Subtracting 2 from both sides,
x-2=-2-2
x-2=-4_______(4)
Again, x=-2
Multiplying by 6,
5x-3=7
2 2 2

Construct 3 equations starting with x=-2
Sol: x=-2

Subtracting 2 from both sides,
x-2=-2-2
x-2=-4_____(1)
Again, x=-2
Multiplying by 6,
6x x=-2×6
6x=-12
Subtracting 12 from both sides,
6x-12=-12-12
6x-12=-24_____(2)
6x-12+24=-24+24
6x+12=0_____(3)

So here we give you some problems and try to solve them which are very problems.

1. 4=5(p-2)
2. -4=5(p-2)
3. 16=4+3(t+2)
4. 4+5(p-1)=34
5. 0=16+4(m-6)

## Solutions: #### Conclusion:

These are some of the problems that try to solve them. It will be very useful for higher studies and for gaining knowledge. Mathematics will be useful in our whole lifetime wherever we go this mathematics will be very useful.