Question

please solve this I will mark you as brainlist​

Answer 1

Step-by-step explanation:

# 3m2n + 2m2n + 5mn2 - mn2 - 7mn +mn

# 5m2n + 4mn2 - 6mn

hope u got answer !!!!

Answer 2

Step-by-step explanation:

$(3m^{2} + 5mn^{2} - 7mn) + (2m ^{2}n - mn ^{2} + mn$

$= 3m^{2}n + 5mn^{2} - 7mn + 2m ^{2}n - mn ^{2} + mn$

$= 3m^{2} n + 2m {}^{2}n + 5mn { }^{2} - mn {}^{2} - 7mn + mn$

$like \: terms \: are \: added$

$= 5m {}^{2}n + 4mn {}^{2} - 6mn$

HOPE IT HELPS

THANK YOU