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Step-3

Title: Solve the equation

Grade: 7-b Lesson: S2-L9

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

Lesson Steps

Steps	Problem	Solution
1	Solve	\$ 65n^3 + 56 - 64n^3 = 120 \$
2	Move constant term to the right side	\$ 65n^3 - 64n^3 = 120 - 56 \$
3	After Simplification	\$ n^3 = 64 = 4^3 \$
4	Applying cube root on both sides	\$ root3(n^3) = root3(4^3) \$
5	After canceling cube roots on both sides	\$ n = 4 \$
6	Answer	B = \$ n = 4 \$

Steps

Problem

Solution

Solve

\$ 65n^3 + 56 - 64n^3 = 120 \$

Move constant term to the right side

\$ 65n^3 - 64n^3 = 120 - 56 \$

After Simplification

\$ n^3 = 64 = 4^3 \$

Applying cube root on both sides

\$ root3(n^3) = root3(4^3) \$

After canceling cube roots on both sides

\$ n = 4 \$

Answer

B = \$ n = 4 \$