Solve for x
x=-1
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7x+4=4x-4+5
Combine 3x and 4x to get 7x.
7x+4=4x+1
Add -4 and 5 to get 1.
7x+4-4x=1
Subtract 4x from both sides.
3x+4=1
Combine 7x and -4x to get 3x.
3x=1-4
Subtract 4 from both sides.
3x=-3
Subtract 4 from 1 to get -3.
x=\frac{-3}{3}
Divide both sides by 3.
x=-1
Divide -3 by 3 to get -1.
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y = 3x + 4
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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