Solve for x
x = \frac{5}{4} = 1\frac{1}{4} = 1.25
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3x+7=8-x+4
Combine 2x and -x to get x.
3x+7=12-x
Add 8 and 4 to get 12.
3x+7+x=12
Add x to both sides.
4x+7=12
Combine 3x and x to get 4x.
4x=12-7
Subtract 7 from both sides.
4x=5
Subtract 7 from 12 to get 5.
x=\frac{5}{4}
Divide both sides by 4.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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