90 + 20x + 10x = 180
30x = 90
x = 3
5.1x10^6 is the greatest because when u multiply it, it is 5 million
Answer:
my answer is B
Step-by-step explanation:
hope this helps
Answer:
C
Step-by-step explanation:
Group like terms
= 2x - x +3 +5
Add the similar 'elements'
= x + 3 + 5
Add the numbers
3 + 5 = 8 + x
= x+8
C and E and F are all the correct answers
