Solve for x
x=y-20
Solve for y
y=x+20
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180=200-y+x
Add 180 and 20 to get 200.
200-y+x=180
Swap sides so that all variable terms are on the left hand side.
-y+x=180-200
Subtract 200 from both sides.
-y+x=-20
Subtract 200 from 180 to get -20.
x=-20+y
Add y to both sides.
180=200-y+x
Add 180 and 20 to get 200.
200-y+x=180
Swap sides so that all variable terms are on the left hand side.
-y+x=180-200
Subtract 200 from both sides.
-y+x=-20
Subtract 200 from 180 to get -20.
-y=-20-x
Subtract x from both sides.
-y=-x-20
The equation is in standard form.
\frac{-y}{-1}=\frac{-x-20}{-1}
Divide both sides by -1.
y=\frac{-x-20}{-1}
Dividing by -1 undoes the multiplication by -1.
y=x+20
Divide -20-x by -1.
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Matrix
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Simultaneous equation
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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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