Answer:
31
Step-by-step explanation:
A negative negative is a positive
12- (-19)
12+19
31
B) 43 because they increase 3
c) 32 because they decrease 7
Answer:
4 billion
Step-by-step explanation:
65 billion pr 54 billion
59 degrees!
because you set up your problem: 3c+2+2c-7=90
then combine all like terms: 5c-5=90
Add 5 to both sides: 5c=95
then divide both sides by 5: c=19
Plug in your answer: 3(19)+2=59