Solve for x
x=-1
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2\left(x+2\right)-5\left(x-1\right)=10-2x
Multiply both sides of the equation by 10, the least common multiple of 5,2.
2x+4-5\left(x-1\right)=10-2x
Use the distributive property to multiply 2 by x+2.
2x+4-5x+5=10-2x
Use the distributive property to multiply -5 by x-1.
-3x+4+5=10-2x
Combine 2x and -5x to get -3x.
-3x+9=10-2x
Add 4 and 5 to get 9.
-3x+9+2x=10
Add 2x to both sides.
-x+9=10
Combine -3x and 2x to get -x.
-x=10-9
Subtract 9 from both sides.
-x=1
Subtract 9 from 10 to get 1.
x=-1
Multiply both sides by -1.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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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}