200+12m= 644
subtract 200 from both sides
12m= 444
divide both sides by 12
m= 37
he sold 37 albums
5.75a + 6.5c = 53.25
a + c = 9
c = 9 - a
5.75a + 58.5 - 6.5a = 53.25
5.25 = 0.75a
a = 7
7 + c = 9
c = 2
she bought 7 apple pies
please give brainliest
N is an number you make up or your teacher so we need to know what n equals
Answer:
D
Step-by-step explanation: