Question

write three solution for each of the following equation.
(i) 2 x + y = 7
(ii) x=4y
(iii) x-y =10​

Answer 1

3 )

x+y=10.....(1)

x−y=2.....(2)

Adding equation (1)&(2), we have

(x+y)+(x−y)=10+2

2x=12

⇒x= 2

12

=6

Substituting the value of x in equation (1), we have

6+y=10

⇒y=10−6=4

Hence the solution for the equations x+y=10 and x−y=2 are x=6 and y=4.

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