Solve for x
x=3
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4\left(x-2\right)-5\left(5-2x\right)+4x-1=80-20x
Multiply both sides of the equation by 20, the least common multiple of 5,4,20.
4x-8-5\left(5-2x\right)+4x-1=80-20x
Use the distributive property to multiply 4 by x-2.
4x-8-25+10x+4x-1=80-20x
Use the distributive property to multiply -5 by 5-2x.
4x-33+10x+4x-1=80-20x
Subtract 25 from -8 to get -33.
14x-33+4x-1=80-20x
Combine 4x and 10x to get 14x.
18x-33-1=80-20x
Combine 14x and 4x to get 18x.
18x-34=80-20x
Subtract 1 from -33 to get -34.
18x-34+20x=80
Add 20x to both sides.
38x-34=80
Combine 18x and 20x to get 38x.
38x=80+34
Add 34 to both sides.
38x=114
Add 80 and 34 to get 114.
x=\frac{114}{38}
Divide both sides by 38.
x=3
Divide 114 by 38 to get 3.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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