Solve for x
x=2
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7x+5-3x=13
Subtract 3x from both sides.
4x+5=13
Combine 7x and -3x to get 4x.
4x=13-5
Subtract 5 from both sides.
4x=8
Subtract 5 from 13 to get 8.
x=\frac{8}{4}
Divide both sides by 4.
x=2
Divide 8 by 4 to get 2.
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y = 3x + 4
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Matrix
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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 ) }
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Limits
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