Solve for x
x=2
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2x+12-\left(5-3x\right)=2\left(-x+9\right)+3
Use the distributive property to multiply 2 by x+6.
2x+12-5-\left(-3x\right)=2\left(-x+9\right)+3
To find the opposite of 5-3x, find the opposite of each term.
2x+12-5+3x=2\left(-x+9\right)+3
The opposite of -3x is 3x.
2x+7+3x=2\left(-x+9\right)+3
Subtract 5 from 12 to get 7.
5x+7=2\left(-x+9\right)+3
Combine 2x and 3x to get 5x.
5x+7=2\left(-x\right)+18+3
Use the distributive property to multiply 2 by -x+9.
5x+7=2\left(-x\right)+21
Add 18 and 3 to get 21.
5x+7-2\left(-x\right)=21
Subtract 2\left(-x\right) from both sides.
5x+7-2\left(-1\right)x=21
Multiply -1 and 2 to get -2.
5x+7+2x=21
Multiply -2 and -1 to get 2.
7x+7=21
Combine 5x and 2x to get 7x.
7x=21-7
Subtract 7 from both sides.
7x=14
Subtract 7 from 21 to get 14.
x=\frac{14}{7}
Divide both sides by 7.
x=2
Divide 14 by 7 to get 2.
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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
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Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}