16 % 38 dollars. By proportion:-
100 % = 100*38 / 16 = 237.5 answer
X -

x + 4 = -

First, simplify

to

/ Your problem should look like: x -

+ 4 = -
Second, simplify x -

+ 4 to

+ 4 / Your problem should look like:

+ 4 =
Third, regroup terms. / Your problem should look like: 4 -

= -
Fourth, multiply both sides by 2. / Your problem should look like: 8 - x = -1
Fifth, subtract 8 from both sides. / Your problem should look like: -x = -1 - 8
Sixth, simplify -1 - 8 to -9. / Your problem should look like: -x = -9
Seventh, multiply both sides by -1. / Your problem should look like: x = 9
Answer:
x = 9
17-6 x 10/2+ 12
17-60/2+12
17-30+12
17-18
= -1
Explanation of what exactly
6x + y = x + 5y
5x = 4y
4x + 6x + y = 180
10x + y = 180 so y = 180 - 10x
substitute y = 180 - 10x into 5x = 4y
5x = 4y
5x = 4(180 - 10x )
5x = 720 - 40x
45x = 720
x = 16
answer A.
x = 16