Q1 of 40 Page 98

Solve each of the following pairs of equations by reducing them to a pair of linear equation.




⇒ …I


⇒


Substituting = p and = q


We get the pair of linear equation,


p + q = 2 …III


p – q = 6 ….IV


using the elimination method,


p + q = 2


p – q = 6


2p = 8


p = 4


substitute the value of p in Eq. III


4 + q = 2


q = -2


but, = p = 4 ⇒ x =


= q = -2 ⇒ x =


More from this chapter

All 40 →
10

Suppose you have D12000 to save. You have to save some amount at 10% and the rest at 15%. How much should be saved at each rate to yield 12% on the total amount saved?

 1

Solve each of the following pairs of equations by reducing them to a pair of linear equation.


 1

Solve each of the following pairs of equations by reducing them to a pair of linear equation.


 1

Solve each of the following pairs of equations by reducing them to a pair of linear equation.