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Step-4

Title: Calculate the equation

Grade: 8-a Lesson: S3-L5

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

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Calculate the equation \$ \| x + 4 \| + 8 = 4 \$
2	Step	Adding - 7 on both sides we get	\$ \| x + 4 \| + \cancel8 - \cancel8 = 4 - 8 \$
3	Step	After cancellation we get	\$\| x + 4 \| = - 4\$
4	Formula:	By using formula	\$\| x \| = a\$
5	Hint	By removing mod we get(+) or (-)	\$x=a (or) x=-a\$
6	Step	Here 'a' is '-4'	\$x + 4 = -4 (or) x + 4 = -(-4)\$
7	Step	Adding - 4 on both sides we get	\$ x + \cancel4 - \cancel4 = -4 - 4 (or) x + \cancel4 - \cancel4 = 4 - 4\$
8	Step	After cancellation we get	\$x = -8 (or) x = 0\$
9		Answer	B

Step

Type

Explanation

Answer

Problem

Calculate the equation
\$ | x + 4 | + 8 = 4 \$

Step

Adding - 7 on both sides we get

\$ | x + 4 | + \cancel8 - \cancel8 = 4 - 8 \$

Step

After cancellation we get

\$| x + 4 | = - 4\$

Formula:

By using formula

\$| x | = a\$

Hint

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

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

Step

Here 'a' is '-4'

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

Step

Adding - 4 on both sides we get

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

Step

After cancellation we get

\$x = -8 (or) x = 0\$

Answer