Question

EXERCISE 3.4
1. Solve the following pair of linear equations by the elimination method and the subsis
method
0 x+y5 and 2x - 3y = 4
(ii) 3x + 4y = 10 and 2x – 2y=2
20
3x - 5y - 4-0 and 9x - 2y +7
:-1 and x -
X
20 -
2
3​

Answer 1

Answer:

X+y=5 ×3.......1

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

3x+3y=15......3

add equation 2 and 3

2x-3y=4

3x+3y=15

--------------

5x =19

x=19/5

PUT X VALUE IN ......1

x+y=5

19/5+y=5

19+5y=25

5y=25-19

5y=6

y=6/5

GICH GILIGILI