1: 9 - z +3 - 2z =
2: n +5n=
3: 12c - c=
4: 9 - z + 3 - 2z

1:12−3z

2:6n

3:11c

4: 12-3z

Step-by-step explanation:

1:

9 - z +3 - 2z

(9+3)+(−z−2z)

12−3z

2:

n +5n

6n

3:

12c - c

11c

4:

9 - z + 3 - 2z

(9+3)+(−z−2z)

12-3z

Hope this helped

step-by-step explanation: it is d

wth is with the little mtn top and what are you talking about like fix your words and accually make sence with them and i like was in a completly different question like three times like it seems like your ilitteret