Answer:
try the 3rd one
Step-by-step explanation:
if it's not right then i'm sorry
Answer:
18. g= -3
19. x= -1
20. n= 3
21. p= -1
22. d= -3
23. a= 5
Step-by-step explanation:
how to solve the variable (using 18 as an example)
step 1: simplify both sides of the equation.
20+g+g=14
(g+g)+(20)=14(combine like terms)
2g+20=14
2g+20=14
step 2: subtract 20 from both sides.
2g+20−20=14−20
2g=−6
step 3: divide both sides by 2.
2g/2 = -6/2
Answer:1200 miles
Step-by-step explanation:
Given
Mr. and Mrs. Thompson drove 
in October
They drove 2 times as many miles in December
so they drove 
in December
In November they drove 2 times as many as in december
So they drive 1200 miles in November
