Joel gave one fourth of his 236 postage stamps to his sister (a) what percent of his postage stamps did joel give to his sister (b) how many postage stamps did joel have left

Ivan began dividing g2  – 6 by g + 1, noting that . he started by placing g in the quotient, as shown below. what is g2  – 6 divided by g + 1? g –  1 –  g + 1  – g  –  7 + g  –  5  + 

9/10 divide by -3/15 as a mixed number

Can someone me with the property questions for 12 13 and 14 plz