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Title: Calculate the equation

Grade: 8-a Lesson: S4-L6

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 + 3 \| = \| x + 4 \| \$
2	Formula:	By using formula	\$\| x \| = \| x \| \$
3	Hint	By removing mod we get(+) or (-)	\$x=x (or) x=-x \$
4	Step	By simplifying we get	\$ x + 3 = x + 4 (or) x + 3 = -( x + 4 ) = - x - 4 \$
5	Step	Move 'x' variable terms right hand side and constant terms left hand side	\$ x - x = 4 - 3 (or) x + x = - 4 - 3 \$
6	Step	After simplification we get	\$ 0 = 1 (or) 2x = -7 \$
7	Step	Dividing on both sides by '2' we get	\$ \cancel2/\cancel2x = -7/2 \$
8	Step	After cancellation we get	\$ x = -7/2 \$
9		Answer	C

Step

Type

Explanation

Answer

Problem

Calculate the equation
\$ | x + 3 | = | x + 4 | \$

Formula:

By using formula

\$| x | = | x | \$

Hint

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

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

Step

By simplifying we get

\$ x + 3 = x + 4 (or) x + 3 = -( x + 4 ) = - x - 4 \$

Step

Move 'x' variable terms right hand side and constant terms left hand side

\$ x - x = 4 - 3 (or) x + x = - 4 - 3 \$

Step

After simplification we get

\$ 0 = 1 (or) 2x = -7 \$

Step

Dividing on both sides by '2' we get

\$ \cancel2/\cancel2x = -7/2 \$

Step

After cancellation we get

\$ x = -7/2 \$

Answer