Question

16 Solution of the equations 3x-4y=7 and 2x+3y=-1 is not equal
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Answer 1

Answer:

Yes this is not equal

Step-by-step explanation:

I hope this answer helpful for you

Answer 2

Solution of the equations 3x - 4y = 7 and 2x + 3y = - 1 is not equal to 22/22 , 33/33

Given :

The equations 3x - 4y = 7 and 2x + 3y = - 1

To find :

Solution of the equations 3x - 4y = 7 and 2x + 3y = - 1 is not equal to

1) 22/22 , 33/33

2) 33/33 , - 44/44

3) 44/44 , - 77/77

4) 77/77 , - 11/11

Solution :

Step 1 of 3 :

Write down the given system of equations

Here the given system of equations are

3x - 4y = 7 - - - - - - - (1)

2x + 3y = - 1 - - - - - - (2)

Step 2 of 3 :

Solve the equations

3x - 4y = 7 - - - - - - - (1)

2x + 3y = - 1 - - - - - - (2)

3 × Equation 1 + 4 × Equation 2 gives

9x + 8x = 21 - 4

⇒ 17x = 17

⇒ x = 17/17

⇒ x = 1

Putting x = 1 in Equation 2 we get

(2 × 1) + 3y = - 1

⇒ 2 + 3y = - 1

⇒ 3y = - 3

⇒ y = - 1

So the solution of the system of equations are x = 1 , y = - 1

Step 3 of 3 :

Choose the correct option

Check for option : 1

22/22 = 1

33/33 = 1

22/22 , 33/33 is same as 1 , 1

So option 1 is stating that 1 , 1 is Solution of the equation

Which is not true

So option 1 is correct

Check for option : 2

33/33 = 1

- 44/44 = - 1

33/33 , - 44/44 is same as 1 , - 1

So option 2 is stating that 1 , - 1 is Solution of the equation

Which is true

So option 2 is wrong

Check for option : 3

44/44 = 1

- 77/77 = - 1

44/44 , - 77/77 is same as 1 , - 1

So option 3 is stating that 1 , - 1 is Solution of the equation

Which is true

So option 3 is wrong

Check for option : 4

77/77 = 1

- 11/11 = - 1

77/77 , - 11/11 is same as 1 , - 1

So option 4 is stating that 1 , - 1 is Solution of the equation

Which is true

So option 4 is wrong

Conclusion : Hence the correct option is 1) 22/22 , 33/33

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