Answer:
D
Step-by-step explanation:
Since you are trying to make x on its own, you are trying to get rid of the co-efficient. The co-efficient is three, so you divide 3 by 3, which would equal one, leaving x on its own. Whatever you do to one side you do to the other, so you would divide 27 by 3 as well.
x = 9
Answer:
C
Step-by-step explanation:
If you multiply the top equation by 7, you will get -7x.
Then, if you add -7x to 7x, it will eliminate the x value
Step-by-step explanation:
There are many possible solutions. For example:
3x + 0 = 1x + 4
4x + 1 = 2x + 5
5x + 2 = 3x + 6
Answer:
3rfwf
Step-by-step explanation:
a,c e
Answer:
Scientific notation: 4 ⋅ 10 -4
expanded form: 0.0004
