The solution of the equations x - y = 10 and x + y = 70 is --------.A)

1.	The solution of the equations x - y = 10 and x + y = 70 is --------.A) (40,30) B) (30,40) C) (10,60) D) (50,20)
Answer» Answer: A) 40, 30 Step-by-step explanation: ADDING both EQUATIONS :- (X-y= 10). + ( x+y= 70) 2x = 80 x = 40 . Putting the value of x in any of the equation :- 40-y = 10 -y = 10-40 -y = -30 y = 30

The solution of the equations x - y = 10 and x + y = 70 is --------.A) (40,30) B) (30,40) C) (10,60) D) (50,20)

Answer»

Answer:

A) 40, 30

Step-by-step explanation:

ADDING both EQUATIONS :-

(X-y= 10). + ( x+y= 70)

2x = 80

x = 40 .

Putting the value of x in any of the equation :-

40-y = 10

-y = 10-40

-y = -30

y = 30

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The solution of the equations x - y = 10 and x + y = 70 is --------.A) (40,30) B) (30,40) C) (10,60) D) (50,20)​

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The solution of the equations x - y = 10 and x + y = 70 is --------.A) (40,30) B) (30,40) C) (10,60) D) (50,20)