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Step-3

Title: Solve the equation

Grade: 7-b Lesson: S2-L3

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

Lesson Steps

Steps	Problem	Solution
1	Solve	\$ 15y + 81 = 12 \$
2	Adding '\$-81\$' on both sides	\$ 15y + \cancel81 - \cancel81 = 12 - 81 \$
3	After cancelation	\$ 15y = - 69 \$
4	Dividing on both sides by '\$15\$' of the equality	\$ \cancel(15)^1/ \cancel(15)^1 y = \cancel(- 69)^23/ \cancel(15)^5 \$
5	After cancelation	\$ y = - 23/5 \$
6	Answer	D = \$ y = - 23/5 \$

Steps

Problem

Solution

Solve

\$ 15y + 81 = 12 \$

Adding '\$-81\$' on both sides

\$ 15y + \cancel81 - \cancel81 = 12 - 81 \$

After cancelation

\$ 15y = - 69 \$

Dividing on both sides by '\$15\$' of the equality

\$ \cancel(15)^1/ \cancel(15)^1 y = \cancel(- 69)^23/ \cancel(15)^5 \$

After cancelation

\$ y = - 23/5 \$

Answer

D = \$ y = - 23/5 \$