Question

Can you answer these:

1. _______ and _______ are algebraic methods to

find the solution of a pair of linear equations.

2. What do we substitute in substitution method?

3. Find the solution by substitution method:

2x+y=21

3x+5y=49​

Answer 1

Answer:

1. There are three algebraic methods that can be used to solve a pair of linear equations namely (1) Substitution method (2) Elimination method (3) Cross - multiplication method.
2. The substitution method functions by substituting the one y-value with the other. We're going to explain this by using an example. We can substitute y in the second equation with the first equation since y = y. The solution of the linear system is (1, 6).