Answer:
31
Step-by-step explanation:
21+10=31
Answer:
30°
Step-by-step explanation:
Answer:
I Don't Know
Step-by-step explanation:
I am still in 7th grade, I haven't learned this yet. I need the points
Answer:
-9
Step-by-step explanation:
-7x+12=75
-12 -12
-7x= 63
divide by -7 on both sides
x = -9