Solve for x
x = -\frac{11}{8} = -1\frac{3}{8} = -1.375
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7x+9+7=3-x+2
Combine 6x and x to get 7x.
7x+16=3-x+2
Add 9 and 7 to get 16.
7x+16=5-x
Add 3 and 2 to get 5.
7x+16+x=5
Add x to both sides.
8x+16=5
Combine 7x and x to get 8x.
8x=5-16
Subtract 16 from both sides.
8x=-11
Subtract 16 from 5 to get -11.
x=\frac{-11}{8}
Divide both sides by 8.
x=-\frac{11}{8}
Fraction \frac{-11}{8} can be rewritten as -\frac{11}{8} by extracting the negative sign.
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{ x } ^ { 2 } - 4 x - 5 = 0
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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.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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