Solve for x
x = -\frac{13}{3} = -4\frac{1}{3} \approx -4.333333333
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5\left(x+7\right)-4\left(x+1\right)=2\left(x+1\right)-10\left(x+1\right)
Multiply both sides of the equation by 20, the least common multiple of 4,5,10,2.
5x+35-4\left(x+1\right)=2\left(x+1\right)-10\left(x+1\right)
Use the distributive property to multiply 5 by x+7.
5x+35-4x-4=2\left(x+1\right)-10\left(x+1\right)
Use the distributive property to multiply -4 by x+1.
x+35-4=2\left(x+1\right)-10\left(x+1\right)
Combine 5x and -4x to get x.
x+31=2\left(x+1\right)-10\left(x+1\right)
Subtract 4 from 35 to get 31.
x+31=2x+2-10\left(x+1\right)
Use the distributive property to multiply 2 by x+1.
x+31=2x+2-10x-10
Use the distributive property to multiply -10 by x+1.
x+31=-8x+2-10
Combine 2x and -10x to get -8x.
x+31=-8x-8
Subtract 10 from 2 to get -8.
x+31+8x=-8
Add 8x to both sides.
9x+31=-8
Combine x and 8x to get 9x.
9x=-8-31
Subtract 31 from both sides.
9x=-39
Subtract 31 from -8 to get -39.
x=\frac{-39}{9}
Divide both sides by 9.
x=-\frac{13}{3}
Reduce the fraction \frac{-39}{9} to lowest terms by extracting and canceling out 3.
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4 \sin \theta \cos \theta = 2 \sin \theta
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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}