Solve for x
x=8
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12-6x+6x+9=2x+5
Use the distributive property to multiply 3 by 2x+3.
12+9=2x+5
Combine -6x and 6x to get 0.
21=2x+5
Add 12 and 9 to get 21.
2x+5=21
Swap sides so that all variable terms are on the left hand side.
2x=21-5
Subtract 5 from both sides.
2x=16
Subtract 5 from 21 to get 16.
x=\frac{16}{2}
Divide both sides by 2.
x=8
Divide 16 by 2 to get 8.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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