If I understand your question well, I suppose you mean

Answer:
= -21 - 15g
Step-by-step explanation:
Given that:
= -3(7+5g)
By simplifying
As "-" sign will invert the inner signs:
= -21 - 15g
I hope it will help you!!
Answer:
10 2/3 cars
Step-by-step explanation:
We can use a ratio
4 cars x cars
------------- = -----------
3 hours 8 hours
Using cross products
4 *8 = 3 *x
32 = 3x
Divide each side by 3
32/3 = 3x/3
10 2/3 cars
Answer:
$6.60 dollars
Step-by-step explanation:
He bought 10 34¢ stamps which means it only costed $3.40, because 10x.34=3.40
So in order to find the change, you subtract $10-$3.40, which equals $6.60
.2 is 1/5 as a decimal, because 2/10 broken down is 1/5. we have to write it this way (0.2) because there is no fifths place.