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Step-1

Title: Determine the value of an expression by substituting the values

Grade: 6-b Lesson: S4-L6

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

Lesson Steps

Steps	Problem	Solution
1	Determine the value of an expression by substituting the value x = 2	\$1/x - 3/x^2 \$
2	Now substitute "x" value in the expression	\$ 1/2 - 3/2^2 \$
3	After simplification we get	\$ 1/2 - 3/4 \$
4	Taking LCM as 4	\$ (2 - 3)/4 \$
5	After simplification we get	\$ - 1/4 \$
6	Answer	A = \$ - 1/4 \$

Steps

Problem

Solution

Determine the value of an expression by substituting the value
x = 2

\$1/x - 3/x^2 \$

Now substitute "x" value in the expression

\$ 1/2 - 3/2^2 \$

After simplification we get

\$ 1/2 - 3/4 \$

Taking LCM as 4

\$ (2 - 3)/4 \$

After simplification we get

\$ - 1/4 \$

Answer

A = \$ - 1/4 \$