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Step-5

Title: Solve the equation

Grade: 7-b Lesson: S2-L2

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

Lesson Steps

Steps	Problem	Solution
1	Solve	\$ 10x - 1 = 199 \$
2	Adding '\$+1\$' on both sides	\$ 10x - \cancel1 + \cancel1 = 199 + 1 \$
3	After cancelation	\$ 10x = 200 \$
4	Dividing on both sides by '\$10\$' of the equality	\$ \cancel(10)^1/ \cancel(10)^1 x = \cancel(200)^20/ \cancel(10)^1 \$
5	After cancelation	\$ x = 20 \$
6	Answer	A = \$ x = 20 \$

Steps

Problem

Solution

Solve

\$ 10x - 1 = 199 \$

Adding '\$+1\$' on both sides

\$ 10x - \cancel1 + \cancel1 = 199 + 1 \$

After cancelation

\$ 10x = 200 \$

Dividing on both sides by '\$10\$' of the equality

\$ \cancel(10)^1/ \cancel(10)^1 x = \cancel(200)^20/ \cancel(10)^1 \$

After cancelation

\$ x = 20 \$

Answer

A = \$ x = 20 \$