13x+4
Combine like terms
If there is a minus sign count it as a negative
Answer:

Step-by-step explanation:
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Isolate
for
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Substitute
:

Isolate
for
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For

Substitute 



The solution to the system of equations are:

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Answer:
2.32 gallons of paint
Step-by-step explanation:
First, find the area of all 4 sides of the room, with the equation A = lw
11(10)
= 110 (for 2 of the walls)
18(10)
= 180 (for the other 2 walls)
Add these up:
110 + 110 + 180 + 180
= 580
Then, divide this by 250:
580/250
= 2.32
So, 2.32 gallons of paint will be needed to paint the room.