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Step-5

Title: Find the modulus of the equations

Grade: 8-a Lesson: S2-L7

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

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Solve the equation \$ \| x + 4 \| = 5 \$
2	Step	By using formula	\$\| x \| = a \$
3	Hint	By removing mod we get (+) (or) (-)	\$x = a (or) x = - a\$
4	Step	Here 'a' is -5	\$x + 4 = 5 (or) x + 4 = - 5 \$
5	Step	Adding "- 4" on both sides we get	\$ x + \cancel4 - \cancel4 = 5 - 4 (or) x + \cancel4 - \cancel4 = - 5 - 4 \$
6	Step	After cancellation we get	\$x = 1 (or) x = - 9\$
7		Answer	A

Step

Type

Explanation

Answer

Problem

Solve the equation
\$ | x + 4 | = 5 \$

Step

By using formula

\$| x | = a \$

Hint

By removing mod we get (+) (or) (-)

\$x = a (or) x = - a\$

Step

Here 'a' is -5

\$x + 4 = 5 (or) x + 4 = - 5 \$

Step

Adding "- 4" on both sides we get

\$ x + \cancel4 - \cancel4 = 5 - 4 (or) x + \cancel4 - \cancel4 = - 5 - 4 \$

Step

After cancellation we get

\$x = 1 (or) x = - 9\$

Answer