Question

erefore, the equations do not have a common solution. So, the two rails will not
SS each other.
EXERCISE 3.3
1. Solve the following pair of linear equations by the substitution method.
(1) x+y=14
(ii) s-t=3
S t
+
3
2
=
6
x-y=4
(iii) 3x - y=3
9x – 3y=9
(iv) 0.2x +0.3y=1.3
0.4x +0.5y=2.3
3x 5y = -2
(v) V7x+13 y=0
fri)
2 3
13
х у
3 2
+
13x - 18 y = 0
6
please solve it fast ​

Answer 1

Answer:

Answer

1.x+y=14

sol:-x+y=14 ....1

x-y=4 ....2

From equation (1)

x+y=14

x=14 - y

Substituting the value of x in equation (2)

x - y =4

(14 - y) - y =4

14-y -y=4

14-2y=4

-2y=4 -14

-2y = -10

y= -10÷ -2

y=5

Putting y=5 in (2)

x-y=4

x=y+4

x=5+4

x=9

Hence, x=9,y=5 in the solution of given equation