Solve for x
x=8
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5x-15-4=2\left(x-1\right)+7
Use the distributive property to multiply 5 by x-3.
5x-19=2\left(x-1\right)+7
Subtract 4 from -15 to get -19.
5x-19=2x-2+7
Use the distributive property to multiply 2 by x-1.
5x-19=2x+5
Add -2 and 7 to get 5.
5x-19-2x=5
Subtract 2x from both sides.
3x-19=5
Combine 5x and -2x to get 3x.
3x=5+19
Add 19 to both sides.
3x=24
Add 5 and 19 to get 24.
x=\frac{24}{3}
Divide both sides by 3.
x=8
Divide 24 by 3 to get 8.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
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}