She added 4, multiplied the sum by -5, and subtracted 12. She then doubled the result and got -34. What number did Christa started with?

Answer 1

work backwards.
first we start with -34.
from the second statement, it was said that she doubled it, but since we're working backwards, we divide -34 by 2:
-34 / 2 = -17
then subtracted by 12,, thus we add 12 by -17 :
-17 + 12 = -5
multiplied by -5,, thus we divide by -5:
-5 / -5 = 1
finally, she added 4,, thus we subtract by 4:
1 - 4 = -3

thus the number is -3

hope this helps~ :)

Answer 2

Multiplyed by 4 then 7 added after subtracting 3 the result is 8 what is the number