Question

Plz help solve them thank you in advance!

Answer 1

#1

$\\ \sf{:}\dashrightarrow 20m+(-16)m=20m-16m=4m$

#2

$\\ \sf{:}\dashrightarrow 5m+(-16m)=5m-16m=-11m$

#3

$\\ \sf{:}\dashrightarrow -9m+11m=2m$

#4

$\\ \sf{:}\dashrightarrow -9m+(-11m)=-9m-11m=-20m$