Solve for x
x=7
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Linear Equation
5 problems similar to:
x - ( 2 x + 5 ) - 5 ( 1 - 2 x ) = 2 ( 3 + 4 x ) - 3 ( x - 4 )
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x-2x-5-5\left(1-2x\right)=2\left(3+4x\right)-3\left(x-4\right)
To find the opposite of 2x+5, find the opposite of each term.
-x-5-5\left(1-2x\right)=2\left(3+4x\right)-3\left(x-4\right)
Combine x and -2x to get -x.
-x-5-5+10x=2\left(3+4x\right)-3\left(x-4\right)
Use the distributive property to multiply -5 by 1-2x.
-x-10+10x=2\left(3+4x\right)-3\left(x-4\right)
Subtract 5 from -5 to get -10.
9x-10=2\left(3+4x\right)-3\left(x-4\right)
Combine -x and 10x to get 9x.
9x-10=6+8x-3\left(x-4\right)
Use the distributive property to multiply 2 by 3+4x.
9x-10=6+8x-3x+12
Use the distributive property to multiply -3 by x-4.
9x-10=6+5x+12
Combine 8x and -3x to get 5x.
9x-10=18+5x
Add 6 and 12 to get 18.
9x-10-5x=18
Subtract 5x from both sides.
4x-10=18
Combine 9x and -5x to get 4x.
4x=18+10
Add 10 to both sides.
4x=28
Add 18 and 10 to get 28.
x=\frac{28}{4}
Divide both sides by 4.
x=7
Divide 28 by 4 to get 7.
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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\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}