Question

solve using substitution method x+y=14 x-y=4

Answer 1

Heya,

Given=> x + y = 14. .... equation 1
x - y = 4. ...... equation 2

Now, we will solve it by substitution method;

Let's take equation 1 =>
x + y = 14
x = 14 - y

Put the value of x in equation 2=>

x - y = 4
=> 14 - y - y = 4
=> 2y = 14 - 4
=> y = 10/2
=> y = 5

Now, put the value of y in equation 1 =>

x + y = 14
=> x + 5 = 14
=> x = 9

Therefore the value of x = 9 and y = 5

Hope this helps....:)

Answer 2

Answer:

Step-by-step explanation:

Given :-

x + y = 14 and x - y = 4

Solution :-

⇒ x + y = 14 ... (i)                  

⇒ x - y = 4 ... (ii)                  

From equation (i), we get                  

⇒ x = 14 - y ... (iii)                  

Putting this value in equation (ii), we get                  

⇒ (14 - y) - y = 4                  

⇒ 14 - 2y = 4                  

⇒ 10 = 2y  

⇒ y = 10/2              

⇒ y = 5 ... (iv)                  

Putting this in equation (iii), we get                  

⇒ x = 9    

           

Hence, x = 9 and y = 5.