Solve for x
x=\frac{1}{3}\approx 0.333333333
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-7x+8=7+2x-2
Combine 2x and -9x to get -7x.
-7x+8=5+2x
Subtract 2 from 7 to get 5.
-7x+8-2x=5
Subtract 2x from both sides.
-9x+8=5
Combine -7x and -2x to get -9x.
-9x=5-8
Subtract 8 from both sides.
-9x=-3
Subtract 8 from 5 to get -3.
x=\frac{-3}{-9}
Divide both sides by -9.
x=\frac{1}{3}
Reduce the fraction \frac{-3}{-9} to lowest terms by extracting and canceling out -3.
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y = 3x + 4
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Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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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