SaiBook.us Algebra

Home Course Section Lessons: L1 L2 L3 L4 L5 L6 L7 L8 L9 L10

Register Enroll

Step-4

Title: Determine the value of an expression

Grade: 7-b Lesson: S3-L3

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 at \$x = 1/36\$ & \$z = 6 \$	\$ zx - 1/(zx) \$
2	Now substitute the values \$x = 1/36\$ & \$z = 6 \$ in the expression	\$ (6)(1/36) - 1/(6 * (1/36)) \$
3	After simplification	\$ \cancel6^1/\cancel36^6 + 1/(\cancel6^1/\cancel36^6) \$
4	After cancelation	\$ 1/6 + 6 \$
5	Take LCM as '\$6\$'	\$ (1 + 36)/6 \$
6	After simplification	\$ 37/6 \$
7	Answer	B : \$ 37/6 \$

Steps

Problem

Solution

Determine the value of an expression at
\$x = 1/36\$ & \$z = 6 \$

\$ zx - 1/(zx) \$

Now substitute the values \$x = 1/36\$ & \$z = 6 \$ in the expression

\$ (6)(1/36) - 1/(6 * (1/36)) \$

After simplification

\$ \cancel6^1/\cancel36^6 + 1/(\cancel6^1/\cancel36^6) \$

After cancelation

\$ 1/6 + 6 \$

Take LCM as '\$6\$'

\$ (1 + 36)/6 \$

After simplification

\$ 37/6 \$

Answer

B : \$ 37/6 \$