Question

complete the following activity
by solving equation 3x-y=0
O-2, 12,1,9
O 1,-2,9,12
O 1,9,-2, 12
O 1,9,12,-2
​

Answer 1

Step-by-step explanation:

Question 1:

Complete the following activity to solve the simultaneous equations.

5x + 3y = 9 -----(I)

2x + 3y = 12 ----- (II)

ANSWER:

Disclaimer: There is error in the Q. In (II) there should have been 2x - 3y = 12

5x + 3y = 9 -----(I)

2x - 3y = 12 ----- (II)

Add (I) and (II)

7x = 21

x = 3

Putting the value of x = 3 in (I) we get

5(3)+3y=9⇒15+3y=9⇒3y=9-15=-6⇒y=-2

Thus, (x, y) = (3, -6).

HOPE YOU UNDERSTAND IT