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-20x=-300
You need to get x by itself. To do so, you can divide each side of the equation by -20.
-20x/-20=-300/-20
x=15
Presumably 300 is the perimeter if so then let length be x and the width be 20x: 2(length+width) = perimeter 2(x+20x) = 300 2x+40x = 300 42x = 300 x = about 7.142857143 units 20x = about 142.857429 units
X=5.2
First, you must simplify the equation.(-5y)=(-300)[Divide by -5]y=60Now, the equation is as simple as it can be. Draw a horizontal line across y's 60. You are now finished!
x=10
You could do this by staring with the answer:150x2 = 300; 300+72 = 372; 372/6 = 62.(2x + 72)/6 = 62