Answer:
11
Step-by-step explanation:
Answer:

Step-by-step explanation:
Divide everything by 2
Divide everything by -1 and since y is negative, you flip the sign

Answer: 2
Step-by-step explanation:
Answer:
Addition.
Step-by-step explanation:
Addition was used to add 5 to both sides, leaving x by itself.
2b+h = 4.82
b+2h = 3.70
multiply the second equation by 2:
2b + 4h = 7.40
subtract the first equation from it:
3h = 2.58
h = 0.86