After doing the vertical technique multiplication of the equations
and
, the value of B is
.
One of the simplest ways to carry out a multiplication operation is vertically.
This approach involves keeping the two words that need to be multiplied one below the other and multiplying each element of the first term by the other term.
The supplied equations in the problem are
and
. To multiply, arrange them and write in a vertical manner.
The complete multiplication of given equation with the vertical method is attached below. Comparing with the sum shown in figure we get,

