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Step-5

Title: Simplify the equation to find variable

Grade: 7-a Lesson: S1-L6

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

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Solve the equation: \$ -0.2 = 0.4/(x-0.25) \$
2	Hint	By Cross Multiplication	\$ -\cancel(0.2)^1(x-0.25) = \cancel(0.4)^0.2 \$
3	Step	After cancellation we get	-x + 0.25 = 0.2
4	Step	Move 0.25 to right side we get	-x = 0.2 - 0.25
5	Step	Both sides "-" signs are cancelled	\$ \cancel(-)x = \cancel(-)0.05 \$
6	Step	After cancellation	x = 0.05
7		Answer	D

Step

Type

Explanation

Answer

Problem

Solve the equation:
\$ -0.2 = 0.4/(x-0.25) \$

Hint

By Cross Multiplication

\$ -\cancel(0.2)^1(x-0.25) = \cancel(0.4)^0.2 \$

Step

After cancellation we get

-x + 0.25 = 0.2

Step

Move 0.25 to right side we get

-x = 0.2 - 0.25

Step

Both sides "-" signs are cancelled

\$ \cancel(-)x = \cancel(-)0.05 \$

Step

After cancellation

x = 0.05

Answer

Tutor: Questions

Seq	Type	Question
1	Problem	What did you learn from this problem?
2	Clue	What did you learn from the clues?
3	Hint	What did you learn from the Hints?
4	Step	What did you learn from the Steps?
5	Step	How can we improve the Steps?

Seq

Type

Question

Audio

Problem

What did you learn from this problem?

Clue

What did you learn from the clues?

Hint

What did you learn from the Hints?

Step

What did you learn from the Steps?

Step

How can we improve the Steps?