Solve for x
x=-2.375
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4\left(5+2.5x\right)=2x+1
Multiply both sides of the equation by 5.
20+10x=2x+1
Use the distributive property to multiply 4 by 5+2.5x.
20+10x-2x=1
Subtract 2x from both sides.
20+8x=1
Combine 10x and -2x to get 8x.
8x=1-20
Subtract 20 from both sides.
8x=-19
Subtract 20 from 1 to get -19.
x=\frac{-19}{8}
Divide both sides by 8.
x=-\frac{19}{8}
Fraction \frac{-19}{8} can be rewritten as -\frac{19}{8} by extracting the negative sign.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
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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