Question

Solve the following simultaneous linear equations:

x + y = 3

x - y = 4​

Answer 1

Answer:

x = 3.5 and y = - 0.5

Step-by-step explanation:

 Adding both :

⇒ ( x + y ) + ( x - y ) = 3 + 4

⇒ x + y + x - y = 7

⇒ 2x = 7

⇒ x = 7 / 2 = 3.5

   Therefore,

⇒ x + y = 3

⇒ 3.5 + y = 3

⇒ y = 3 - 3.5

⇒ y = - 0.5

   Hence,

 x = 3.5 and y = - 0.5

Answer 2

Answer:

hey frnd here is your answer

Step-by-step explanation:

• x+y=3 ----------(1).

• x-y=4 ----------(2).

• from (2) we get x=4+y put this value of x in (1).

• equation (1) is x+y=3

• x+y=3
• 4+y+y=3.
• 2y= -1
• y= -1/2.

• Now put this value of y in x= 4+y

• x=4+y
• x=4+(-1/2)
• x=4-1/2
• x=7/2.

so your final answer is-

(x,y)=(7/2,-1/2).

i hope you get the right answer

thanks for asking

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