Q9 of 92 Page 77

Let us solve the following simultaneous linear equations in two variables by applying cross multiplication method.
13x – 12y + 15 = 0

8x – 7y = 0

To solve the equation by cross multiplication method, we use:

Putting the values, we get:

So, and

⇒ x = 21 and y = 24

Let us solve the following simultaneous linear equations in two variables by applying cross multiplication method.

x + 5y = 36

Let us solve the following simultaneous linear equations in two variables by applying cross multiplication method.

x + y = 2b

x – y = 2a

Let us solve the following simultaneous linear equations in two variables by applying cross multiplication method.

x – y = 2a

ax + by = a² + b²

Questions · 92

5. Linear Simultaneous Equations

1 2 3 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 4 4 5 5 5 1 1 2 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 1 2 3 3 3 3 4 5 5 5 5 5 5 5 5 5 5 5 5 1 2 3 3 4 4 4 4 5 5 5 5 5 5 5 5 1 2 3 4 5 6 7 8 9 10 11 12 13

Let us solve the following simultaneous linear equations in two variables by applying cross multiplication method.13x – 12y + 15 = 08x – 7y = 0