Solve for z
z=-1
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5z-8=4z+1-10^{1}
Divide 20 by 2 to get 10.
5z-8=4z+1-10
Calculate 10 to the power of 1 and get 10.
5z-8=4z-9
Subtract 10 from 1 to get -9.
5z-8-4z=-9
Subtract 4z from both sides.
z-8=-9
Combine 5z and -4z to get z.
z=-9+8
Add 8 to both sides.
z=-1
Add -9 and 8 to get -1.
Examples
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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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