Step-5

Title: Solve the expression using different signs

Grade: 7-a Lesson: S2-L1

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

Lesson Steps

Step Type Explanation Answer

1

Problem

Determine the value of an expression when \$m = 1/2\$ :
\$ 81/18(2m+5) + (2m)/3 + 1 \$

2

Step

Substitute m value in the expression

\$ 81/18(2(1/2)+5) + (2(1/2))/3 + 1 \$

3

Step

After Simplification

\$ \cancel(81)^9/\cancel(18)^2(\cancel2(1/\cancel2)+5) + (\cancel2(1/\cancel2))/3 + 1 \$

4

Step

After cancellation

\$ 9/2(1 + 5) + 1/3 + 1 \$

5

Step

After Simplification

\$ (9\times\cancel(6)^3)/\cancel(2)^1 + 1/3 + 1 \$

6

Step

After cancellation

\$ 27 + 1/3 + 1 \$

7

Step

After simplification

\$ 28 + 1/3 \$

8

Step

Taking 3 as LCM

\$((28\times3) + 1)/3 \$

9

Step

After simplification

\$(84 + 1)/3 \$

10

Step

After simplification

\$ 85/3 \$

11

Answer

B

Tutor: Questions

Seq Type Question Audio

1

Problem

What did you learn from this problem?

2

Clue

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3

Hint

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4

Step

What did you learn from the Steps?

5

Step

How can we improve the Steps?


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