A motorboat goes downstream in a river, covers the distance between two coastal towns in $5$ hours. It covers same distance upstream in six hours. The speed of water is $2$ km/h find the speed of the motorboat in still water.

Think of any two numbers. Like $9$ and $21$. Now to make a relationship between $9$ and $21$, we can write $\left(9\times 2\right)+3=21$.

Now, create three relations for $2$ and $5$.

Think of any two numbers. Like $9$ and $21$. Now to make a relationship between $9$ and $21$, we can write $\left(9\times 2\right)+3=21$.

Now, create three relations for $11$ and $25$.

Think of any two numbers. Like $9$ and $21$. Now to make a relationship between $9$ and $21$, we can write $\left(9\times 2\right)+3=21$.

Now, create three relations for $40$ and $123$.

In the following statement use $\text{'}x\text{'}$' for the unknown number and change it into an equation.

$4$ is $2$ less than any number.

In the following statement use $\text{'}x\text{'}$' for the unknown number and change it into an equation.

Addition of $8$ and any number is $12$.

Complete the following table:

Complete the following table:

Complete the following table: