Question

Check which of the following equations has '2' as solution
(1) X-4=(-2)
(2) 2x-3=5
(3) 3x-6=0
(4) a+3=5
(5) 6-m=10
(6) -2b+1=(-3)
(7) 14x=28
(8) 6y-1=11
(9) 5y+4=20

Answer 1

Hi ,

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Put 2 in each equation in the

place of variable. If it is true then

2 is the solution of that equation.

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Now ,

1 ) x - 4 = -2

2 - 4 = -2

-2 = -2 ( True )

2 is the solution of x - 4 = -2

2 ) 2x - 3 = 5

2( 2 ) - 3 = 5

4 - 3 = 5

1 = 5 ( False )

2 is not a solution of 2x - 3 = 5

3 ) 3x - 6 = 0

3( 2 ) - 6 = 0

6 - 6 = 0

0 = 0 ( True )

2 is the solution of 3x - 6 = 0

4 ) a + 3 = 5

2 + 3 = 5

5 = 5 ( True )

2 is the solution of a + 3 = 5

5 ) 6 - 2x = 10

6 - 2( 2 ) = 10

6 - 4 = 10

2 = 10 ( False )

2 is not a solution of 6 - 2x = 10

6 ) -2b + 1 = -3

-2( 2 ) + 1 = -3

-4 + 1 = -3

-3 = -3 ( True )

2 is a solution of -2b + 1 = -3

7 ) 14x = 28

14( 2 ) = 28

28 = 28 ( True )

2 is a solution of 14x = 28

8 ) 6y - 1 = 11

6( 2 ) - 1 = 11

12 - 1 = 11

11 = 11 ( True )

2 is the solution of 6y - 1 = 11

9 ) 5y + 4 = 20

5( 2 ) + 4 = 20

10 + 4 = 20

14 = 20 ( False )

2 is not a solution of 5y + 4 = 20

I hope this helps you.

: )