Solve for x
x=\frac{y+1}{7}
Solve for y
y=7x-1
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7x=y+1
Multiply both sides of the equation by 28, the least common multiple of 4,28.
\frac{7x}{7}=\frac{y+1}{7}
Divide both sides by 7.
x=\frac{y+1}{7}
Dividing by 7 undoes the multiplication by 7.
7x=y+1
Multiply both sides of the equation by 28, the least common multiple of 4,28.
y+1=7x
Swap sides so that all variable terms are on the left hand side.
y=7x-1
Subtract 1 from both sides.
Examples
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Linear equation
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Arithmetic
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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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