Solve for x_1
x_{1}=3-4x_{2}
Solve for x_2
x_{2}=\frac{3-x_{1}}{4}
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3-x_{1}=4x_{2}
Swap sides so that all variable terms are on the left hand side.
-x_{1}=4x_{2}-3
Subtract 3 from both sides.
\frac{-x_{1}}{-1}=\frac{4x_{2}-3}{-1}
Divide both sides by -1.
x_{1}=\frac{4x_{2}-3}{-1}
Dividing by -1 undoes the multiplication by -1.
x_{1}=3-4x_{2}
Divide 4x_{2}-3 by -1.
4x_{2}=3-x_{1}
The equation is in standard form.
\frac{4x_{2}}{4}=\frac{3-x_{1}}{4}
Divide both sides by 4.
x_{2}=\frac{3-x_{1}}{4}
Dividing by 4 undoes the multiplication by 4.
Examples
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y = 3x + 4
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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
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Limits
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