Quiz mtk jawab yaaa pakai penjelasan kak rahmanauliya,ummi dan lainnya

2.a.-3m+4n-6 + 7n-8m+10
=-3m+4n-6 + -8m+7n+10
=-11m+11n+4
b.15a+7b-5c + -11a-12b+13d
=4a-5b-5c+13d
3.a.-3m+4n-6 - 7n-8m+10
=3m+4n-6 - (-8m)+7n+10
=11m-3n-16
b.15a+7b-5c - (-11a)-12b+13d
=26a+19b-5c-13d
Maaf kalo salah