Question

Sum of two numbers is 150. If one of them is 87, find the other number

Answer 1

Let other number be x

$\\ x + 87 = 150 \\ x = 150 - 87 \\ x = 63$

Answer 2

Given:

Two numbers whose

• Sum = 150

One number is 87 and other number is x.

What To Find:

We have to find the other number that is x.

Equation:

87 + x = 150

Solution:

87 + x = 150

Take 87 to LHS,

⇒ x = 150 - 87

Subtract 87 from 150,

⇒ x = 63

So, the value of x is 63.

Verification:

87 + x = 150

Substitute the values,

⇒ 87 + 63 = 150

Add 87 and 63,

⇒ 150 = 150

∴ LHS = RHS

∴ Hence, verified.