Question

Form algebraic equations for the following statements and solve.

Sum of two numbers is $200$. If one of them is $121$, find the other.

Answer 1

Step-1: To form the algebraic equation:

Let one of the number be $x$.

As per the given condition, one of the number is $121$.

So, the expression for sum of the two numbers is $x+121$.

Also, its given that sum of two numbers is $200$.

Therefore, $x+121=200$.

Thus, $x+121=200$ is the required algebraic equation.

Step-2: To find the solution of $x+121=200$:

$x+121=200$.

Transposing $121$ to the R.H.S.

$x=200-121$

$x=79$.

Therefore, the two numbers are $79$ and $121$.