Solve for x
x=-5
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0.04x+0.3+0.16x=-0.7
Add 0.16x to both sides.
0.2x+0.3=-0.7
Combine 0.04x and 0.16x to get 0.2x.
0.2x=-0.7-0.3
Subtract 0.3 from both sides.
0.2x=-1
Subtract 0.3 from -0.7 to get -1.
x=\frac{-1}{0.2}
Divide both sides by 0.2.
x=\frac{-10}{2}
Expand \frac{-1}{0.2} by multiplying both numerator and the denominator by 10.
x=-5
Divide -10 by 2 to get -5.
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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}