Answer:
1.5 and 4.4
Step-by-step explanation:
hehehehehe
When you have ratios, and some unknowns, you can create complex fractions from them. Bring them to the same denominator, and solve for x.
Example - we have this proportion:
2-x
5-45
And we can change it into fraction:
\frac{2}{5}=\frac{x}{45}
\frac{2*9}{5*9}=\frac{x}{45}
\frac{18}{45}=\frac{x}{45}
18=x
In case of more complex fractions it may come in handy.
<h3>
Answer:</h3>
A.
+-5x+14x+-35
+9x-35
B. 

C. 

D. 


Step-by-step explanation:
A. (3x*2x)+(3x*-5)+(7*2x)+(7*-5)
Multiply and simplify.
+9x-35
B. (
)+(
-3x)+(2x
)+(2x
)
Multiply and simplify.

C. 
Multiply and simplify.

D. 
Multiply and simplify.

I hope this helps!
But you should really do this yourself.
Answer:
[train leaves early] ---- [train leaves on time]------[train leaves late]
Step-by-step explanation:
It can't be simplified because 1/3x and -5/7 aren't like terms and therefore you cannot do addition or subtraction with them.
If you meant x as in multiplied by then here is the solution:
1/3*-5/7
(1*-5)/(3*7)
-5/21
Hope this helps :)