Move 12 to the other side, making it negative
h=31-12
h=19
I think the answer is 78 because more usually mean addition so 57+21=78
0.8 is greater because 3/4 equals .75
Answer:
2
Step-by-step explanation:
3 1/2 - 1 1/2 = 2
PLS GIVE BRAINLIEST
Answer: acute angle, straight line
Step-by-step explanation:
