Answer:
21. is 18 dollars
22. is 75 dollars
Step-by-step explanation:
The answer is 9/10
the denominator is on the bottom
Remember you can do anything to an equaiton as long as you do it to both sides
-x=4-3x
add 3x both sides
3x-x=4+3x-3x
2x=4+0
2x=4
divide 2
2x/2=4/2
2/2x=2
1x=2
x=2
