Answer:
13y+7-11-4y
13y-4y+7-11
9y-4 ans
Explanation:
first combine the like terms along with their front sign
then sbtract 13y by 4y ,after subtract 7 from 11
[ here 7 have (+) and 11 have (-) before itself
according to the rule,(+) + (-) = (-)
hence we have to subtract 7 from 11 and put the (-) before answer]
but put sign (-) before the answer because we should always put that sign before answer which have more value