Solve for x
x=-9y-13
Solve for y
y=\frac{-x-13}{9}
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y+2=-\frac{1}{9}x+\frac{5}{9}
Use the distributive property to multiply -\frac{1}{9} by x-5.
-\frac{1}{9}x+\frac{5}{9}=y+2
Swap sides so that all variable terms are on the left hand side.
-\frac{1}{9}x=y+2-\frac{5}{9}
Subtract \frac{5}{9} from both sides.
-\frac{1}{9}x=y+\frac{13}{9}
Subtract \frac{5}{9} from 2 to get \frac{13}{9}.
\frac{-\frac{1}{9}x}{-\frac{1}{9}}=\frac{y+\frac{13}{9}}{-\frac{1}{9}}
Multiply both sides by -9.
x=\frac{y+\frac{13}{9}}{-\frac{1}{9}}
Dividing by -\frac{1}{9} undoes the multiplication by -\frac{1}{9}.
x=-9y-13
Divide y+\frac{13}{9} by -\frac{1}{9} by multiplying y+\frac{13}{9} by the reciprocal of -\frac{1}{9}.
y+2=-\frac{1}{9}x+\frac{5}{9}
Use the distributive property to multiply -\frac{1}{9} by x-5.
y=-\frac{1}{9}x+\frac{5}{9}-2
Subtract 2 from both sides.
y=-\frac{1}{9}x-\frac{13}{9}
Subtract 2 from \frac{5}{9} to get -\frac{13}{9}.
Examples
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y = 3x + 4
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\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
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