Question

Solve and Check the solution in the following equation
1. X + 7 = 9
2. X/4 = 25
3. 9y = - 135
4. 15 - X = 4
5. 3 (x - 3) = 15
6. 7y + 3 = 9​

Answer 1

Answer:

1.x+7=9

x=9-7

x=2.

2.x/4=25

x=25×4

x=100.

3.9y=-135

y=-135/9

y=-15.

4.15-x=4

15-4=x

x=11.

5.3(x-3)=15

3x-9=15

3x=15+9

3x=24

x=24/3

x=8.

6.7y+3=9

7y=9-3

7y=6

y=6/7.

Answer 2

Answer:

1. X + 7 = 9

so- x = 9 - 7

x= 2ans.

checking the ans,

putting x=2,

x+7=9

2+7 =9

9=9 ans checked.

2.X/4=25

so- x= 25×4

x= 100 ans.

checking the ans,

putting x= 100

x/4 = 25

100/4=25

25=25 ans checked.

3.9y=-135

so- y= -135/9

y= -15 ans.

checking the ans,

putting y= -15

9y=-135

9×-15 =-135

-135=-135 ans checked.

4.15-x=4

so- 15-4=x

11= x ans.

checking the ans,

putting x=11

15x-4=4

15×11=4+4

165= 8

165 is not equal to 8

so it is wrong equation.

5.3(x-3)=15

so= 3x-9=15

3x=15+9

x= 24/3

x= 8ans.

checking the ans,

putting x= 8

3(x-3)=15

3(8-3)=15

24-9=15

15 = 15 ans checked.

6.7y+3=9

so= 7y=9-3

7y=6

y= 6/7ans.

checking the ans,

putting y=6/7

7×6/7+3=9

6+3=9

9=9.ans checked.