Solve for a
a=2
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7a-7+4=11
Use the distributive property to multiply 7 by a-1.
7a-3=11
Add -7 and 4 to get -3.
7a=11+3
Add 3 to both sides.
7a=14
Add 11 and 3 to get 14.
a=\frac{14}{7}
Divide both sides by 7.
a=2
Divide 14 by 7 to get 2.
Examples
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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 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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