A) x=7, you divide both sides by -3 to get x by itself.
b) x=4, you add 7x to both sides to get all the x on one side, you then add 20 to both sides to get all constants on both sides. lastly, you divide by 9 to get x by itself.
Answer:
Step-by-step explanation:
X = 4
is the answer becuase if you multiply 2 by 4.5 you will get 9 and 9 is the same thing
if you multiply 2 by 5.5 = 11 so thats greater then 9 we want nine to be greater then the number 2x
so 2 x 4 is 8 and 8 < 9 so thats your answer