How can you express a clear and coherent argument visually or in writing?

Which two fractions are equivalent to 24/84? 6/42 and 2/7 6/21 and 2/6 12/42 and 3/7 12/42 and 2/7

Robin spent 25% more time on his research project than he had planned he’s been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project

Binh says the point of intersections is (0,-3) which statements identify the errors binh made , check all that apply