Question

Using the elimination method, solve each of the following pairs of simultaneous equations.
1.
2x + 3y = 18
3x - y = 5

2.
9x + 2y = 5
7x - 3y = 13

Answer 1

similarly 2nd one

hope it will be helpful

Answer 2

Answer:

1. x=3. y=4 2.x=1,y= -2.

Step-by-step explanation:

1. in equation 1.multiply by 3 and 2 .so we get equation 6x+9y=54,6x-2y=10 . when we solve this, by eliminate 6x, we get x=3 and y=4.

2.first, we multiply by 7 and 9 .so we get our equation is 63x+14y=35,and 63x-27y=117.eliminate 63x in this equation. we solve ,we get y=-2 and x=1.