Solve for x
x = -\frac{7}{4} = -1\frac{3}{4} = -1.75
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-2\times 4+2x\times 0\times 5x=4x-1
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 4x, the least common multiple of 2x,2,4x.
-8+2x\times 0\times 5x=4x-1
Multiply -2 and 4 to get -8.
-8+2x^{2}\times 0\times 5=4x-1
Multiply x and x to get x^{2}.
-8+0x^{2}\times 5=4x-1
Multiply 2 and 0 to get 0.
-8+0x^{2}=4x-1
Multiply 0 and 5 to get 0.
-8+0=4x-1
Anything times zero gives zero.
-8=4x-1
Add -8 and 0 to get -8.
4x-1=-8
Swap sides so that all variable terms are on the left hand side.
4x=-8+1
Add 1 to both sides.
4x=-7
Add -8 and 1 to get -7.
x=\frac{-7}{4}
Divide both sides by 4.
x=-\frac{7}{4}
Fraction \frac{-7}{4} can be rewritten as -\frac{7}{4} by extracting the negative sign.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}