Step: 1

[Original equation.]

Step: 2

[Subtract 8 from each side.]

Step: 3

[Simplify.]

Step: 4

(5) × (d 5 ) = (5) × - (13)

[Multiply each side by 5.]

Step: 5

[Simplify.]

Correct Answer is : - 65

Step: 1

13m - 4 = 8m

[Original equation]

Step: 2

13m - 4 - 8m = 8m - 8m

[Subtract 8m from each side.]

Step: 3

5m - 4 = 0

Step: 4

5m - 4 + 4 = 0 + 4

[Add 4 to each side.]

Step: 5

5m = 4

Step: 6

[Divide each side by 5.]

Correct Answer is : 4 5

Step: 1

A number z is multiplied by 3 = 3 × z = 3z

Step: 2

3z is decreased by 15 = 3z - 15

Step: 3

3z - 15 = 12

[Original equation.]

Step: 4

3z = 12 + 15

[Add 15 to each side.]

Step: 5

3z = 27

[Add.]

Step: 6

[Divide each side by 3 and simplify.]

Step: 7

So, the number z is 9.

Correct Answer is : 9

Step: 1

A number n multiplied by 6 = 6n .

Step: 2

6n increased by 5 = 5 + 6n

Step: 3

5 + 6n = 17

[Original equation.]

Step: 4

6n = 17 - 5

[Subtract 5 from both sides.]

Step: 5

6n = 12

[Subtract.]

Step: 6

[Divide each side by 6 and simplify.]

Step: 7

So, the value of n is 2.

Correct Answer is : 2

Step: 1

5(y + 4) = 20

[Original expression.]

Step: 2

5y + 5(4) = 20

[Solve the grouping symbol.]

Step: 3

5y + 20 = 20

[Multiply 5 and 4.]

Step: 4

5y + 20 - 20 = 20 - 20

[Subtract 20 from both the sides.]

Step: 5

5y = 0

[Simplify.]

Step: 6

Step: 7

Correct Answer is : 0

Step: 1

4(k - 18) = 16

[Original equation.]

Step: 2

4(k - 18)/4 = 16 4

[Divide each side by 4.]

Step: 3

[Simplify.]

Step: 4

[Add 18 on both sides.]

Step: 5

[Simplify.]

Correct Answer is : 22

Step: 1

3(y + 2) = 6

[Original expression.]

Step: 2

3y + 3(2) = 6

[Solve the grouping symbol.]

Step: 3

3y + 6 = 6

[Multiply 3 and 2.]

Step: 4

3y + 6 - 6 = 6 - 6

[Subtract 6 from both the sides.]

Step: 5

3y = 0

[Simplify.]

Step: 6

Step: 7

Correct Answer is : 0

Step: 1

5x - 15 = 15

[Original equation.]

Step: 2

5x - 15 + 15 = 15 + 15

[Add 15 to each side.]

Step: 3

5x = 30

[Simplify.]

Step: 4

[Divide each side by 5.]

Step: 5

[Simplify.]

Step: 6

The value of x is 6.

Correct Answer is : 6

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