exam Maths Puzzle Numerical Ability

Can you tell me anything on how to understand Multiplying and Dividing Rational Expressions? ITs in a Key to Algebra Student workbook (6).

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exam Other Question

From a rectangular piece of cardboard having dimensions 20 inches by 30 inches an open box is to be made by removing squares of area x squared from each corner.
1. Draw and label
Please help me solve this problem.


Solve for B

A=5B+3C