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Lena Tanner
Mathematics
23 February, 06:21
20*^2-30x-40 solve for x
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Jaylen Hensley
23 February, 06:32
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x = 12
Step-by-step explanation:
Solve for x:
360 - 30 x = 0
Subtract 360 from both sides:
(360 - 360) - 30 x = - 360
360 - 360 = 0:
-30 x = - 360
Divide both sides of - 30 x = - 360 by - 30:
(-30 x) / (-30) = (-360) / (-30)
(-30) / (-30) = 1:
x = (-360) / (-30)
The gcd of 360 and - 30 is 30, so (-360) / (-30) = ( - (30*12)) / (30 (-1)) = 30/30 * (-12) / (-1) = (-12) / (-1):
x = (-12) / (-1)
(-12) / (-1) = (-1) / (-1) * 12 = 12:
Answer: x = 12
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