Multiplication because you undo it
Answer:
(3,-3) (5,-3) (3,-6)
Step-by-step explanation:
I hope this helps!!
4/3=1.33 of a gallon
11/2=5.5 hours
4÷1.33=3.008
3.008×5.5=16.544
16.5 hours
Answer:
working together, they can paint the room in 4 hrs 14 min
Step-by-step explanation:
Multiply both sides by 72x
8x+%2B+9x+=+72
17x+=+72
x+=+4.24 hrs
.24%2A60+=+14.4
working together, they can paint the room in 4 hrs 14 min
This is the simplest proportion i have seen.
This is how we do it:

=

The answer surprisingly is obvious,
z = 1But we can still do cross multiplication
7z = 7
Divide by 7 to isolate z

7 and 7 cancels out
z = 1