Solve for x
x=4\left(y-1\right)
Solve for y
y=\frac{x}{4}+1
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0.25x+1=y
Swap sides so that all variable terms are on the left hand side.
0.25x=y-1
Subtract 1 from both sides.
\frac{0.25x}{0.25}=\frac{y-1}{0.25}
Multiply both sides by 4.
x=\frac{y-1}{0.25}
Dividing by 0.25 undoes the multiplication by 0.25.
x=4y-4
Divide y-1 by 0.25 by multiplying y-1 by the reciprocal of 0.25.
Examples
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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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