Please help me at least 5 long sentences. Thank you.
Look at the points.

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11