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Step-2

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	\$ n/2 + n/3 + n/5 = 1 \$
2	Taking LCM as '\$30\$'	\$ (15n + 10n + 6n)/30 = 1 \$
3	After Addition	\$ (31n)/30 = 1/1 \$
4	By using cross multiplication	\$ 31n = 30 \$
5	Dividing on both sides by '\$31\$' of the equality	\$ \cancel(31)^1/ \cancel(31)^1 n = 30/31 \$
6	After cancelation	\$ n = 30/31 \$
7	Answer	A = \$ n = 30/31 \$

Steps

Problem

Solution

Solve

\$ n/2 + n/3 + n/5 = 1 \$

Taking LCM as '\$30\$'

\$ (15n + 10n + 6n)/30 = 1 \$

After Addition

\$ (31n)/30 = 1/1 \$

By using cross multiplication

\$ 31n = 30 \$

Dividing on both sides by '\$31\$' of the equality

\$ \cancel(31)^1/ \cancel(31)^1 n = 30/31 \$

After cancelation

\$ n = 30/31 \$

Answer

A = \$ n = 30/31 \$