7p − p = 18 2) −5n − 4n = −9

Step-by-step explanation:

1.

Collect like terms

⇒

Divide both sides of the equation by 6

⇒

Calculate

⇒

2.

Collect like terms

⇒

Divide both sides of the equation by -9

⇒

Calculate

⇒

Hope I helped!

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the given 6 = w/p is equivalent to 6p = w, where w is the total area of the walls and p is the area covered by a single can of paint.

knowing that 6 cans of paint will be needed, 6p = w becomes 6(6) = w = 36.   this tells us that the total area to be painted is 36 square units.

add -60 to 120 which will result in : 2x+3y=180

then subtract 2x: 3y=-2x+180

lastly, divide by 2: y= -2/3x+60

hope this is the answer you're looking for: )