Luis simplificó la fracción 72/9 obteniendo como resultado 8/1. El número por el que simplificó Luis fue:?-/ Plsss ayudenme

Complete the steps to find 4.830 ÷ 5

I’m confused on how to work the pie charts

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14