3t shirts cost $18
1 shirt will cost 18/3t = 6/t
7t shirts will then cost = (6/t)*7t = 42
7t shirts will cost $42.00
Answer:
Step-by-step explanation:
ok so, we know they washed 34.
x-5=Trucks washed [19.5-5=(14.5)]
x=cars washed (19.5)
x+x-5=34
2x-5=34
+5 +5
2x=39
divide 2 both sides
x=19.5
To check work: 19.5+14.5=34!
Hope this helps :)
Hey there!
Explanation:
First, you had to do is add by 13 from both sides of an equation.

Then, simplify or add by the numbers.


Next, you can also divide by 3 from both sides of an equation.

And finally, simplify and divide by the numbers,

*The answer must have a positive sign.*

Hope this helps!