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Step-1

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 + 2 \| + 7 = 1 \$
2	Step	Adding - 7 on both sides we get	\$ \| x + 2 \| + \cancel7 - \cancel7 = 1 - 7 \$
3	Step	After cancellation we get	\$\| x + 2 \| = -6\$
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 '-6'	\$x + 2 = -6 (or) x + 2 = -(-6) \$
7	Step	Adding - 2 on both sides we get	\$ x + \cancel2 - \cancel2 = -6 - 2 (or) x + \cancel2 - \cancel2 = 6 - 2\$
8	Step	After cancellation we get	\$x = -8 (or) x = 4\$
9		Answer	A

Step

Type

Explanation

Answer

Problem

Calculate the equation
\$ | x + 2 | + 7 = 1 \$

Step

Adding - 7 on both sides we get

\$ | x + 2 | + \cancel7 - \cancel7 = 1 - 7 \$

Step

After cancellation we get

\$| x + 2 | = -6\$

Formula:

By using formula

\$| x | = a \$

Hint

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

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

Step

Here 'a' is '-6'

\$x + 2 = -6 (or) x + 2 = -(-6) \$

Step

Adding - 2 on both sides we get

\$ x + \cancel2 - \cancel2 = -6 - 2 (or) x + \cancel2 - \cancel2 = 6 - 2\$

Step

After cancellation we get

\$x = -8 (or) x = 4\$

Answer