Solve for b
b=\frac{a-10}{2}
Solve for a
a=2\left(b+5\right)
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-2b=10-a
Subtract a from both sides.
\frac{-2b}{-2}=\frac{10-a}{-2}
Divide both sides by -2.
b=\frac{10-a}{-2}
Dividing by -2 undoes the multiplication by -2.
b=\frac{a}{2}-5
Divide 10-a by -2.
a=10+2b
Add 2b to both sides.
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.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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