Solve for x
x=-1
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4-x=5\left(x+2\right)
Variable x cannot be equal to -2 since division by zero is not defined. Multiply both sides of the equation by 3\left(x+2\right), the least common multiple of 3\left(x+2\right),3.
4-x=5x+10
Use the distributive property to multiply 5 by x+2.
4-x-5x=10
Subtract 5x from both sides.
4-6x=10
Combine -x and -5x to get -6x.
-6x=10-4
Subtract 4 from both sides.
-6x=6
Subtract 4 from 10 to get 6.
x=\frac{6}{-6}
Divide both sides by -6.
x=-1
Divide 6 by -6 to get -1.
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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]
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\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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\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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