Step-5

Title: Solve the equation

Grade: 7-b Lesson: S2-L5

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Steps Problem Solution

1

Solve

\$ 10/5n + 20 = 9 \$

2

After simplification

\$ \cancel10^2/\cancel5^1 n + 20 = 9 \$

3

After cancellation

\$ 2n + 20 = 9 \$

4

Move constant term to the right side

\$ 2n = 9 - 20 \$

5

After simplification

\$ 2 n = - 11 \$

6

Dividing on both sides by '\$2\$' of the equality

\$ \cancel(2)^1/ \cancel(2)^1 n = -11/2 \$

7

After cancelation

\$ n = - 11/2 \$

8

Answer

D = \$ n = - 11/2 \$


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