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Step-5

Title: Solve the equation

Grade: 7-b Lesson: S2-L4

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

Lesson Steps

Steps	Problem	Solution
1	Solve	\$ 2n + (2n)/4 + n/5 + n/2 = 8 \$
2	Taking LCM as '\$20\$'	\$ (40n + 10n + 4n + 10n)/20 = 8 \$
3	After Addition	\$ (64n)/20 = 8/1 \$
4	By using cross multiplication	\$ 64n = 160 \$
5	Dividing on both sides by '\$64\$' of the equality	\$ \cancel(64)^1/ \cancel(64)^1 n =\cancel(160)^5/ \cancel(64)^2 \$
6	After cancelation	\$ n = 5/2 \$
7	Answer	D = \$ n = 5/2 \$

Steps

Problem

Solution

Solve

\$ 2n + (2n)/4 + n/5 + n/2 = 8 \$

Taking LCM as '\$20\$'

\$ (40n + 10n + 4n + 10n)/20 = 8 \$

After Addition

\$ (64n)/20 = 8/1 \$

By using cross multiplication

\$ 64n = 160 \$

Dividing on both sides by '\$64\$' of the equality

\$ \cancel(64)^1/ \cancel(64)^1 n =\cancel(160)^5/ \cancel(64)^2 \$

After cancelation

\$ n = 5/2 \$

Answer

D = \$ n = 5/2 \$