Solve for x
x=\frac{5y}{4}
y\neq 0
Solve for y
y=\frac{4x}{5}
x\neq 0
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4y\times \frac{1}{2}+4y\times \frac{3}{4}=4x
Multiply both sides of the equation by 4y, the least common multiple of 2,4,y.
2y+4y\times \frac{3}{4}=4x
Multiply 4 and \frac{1}{2} to get 2.
2y+3y=4x
Multiply 4 and \frac{3}{4} to get 3.
5y=4x
Combine 2y and 3y to get 5y.
4x=5y
Swap sides so that all variable terms are on the left hand side.
\frac{4x}{4}=\frac{5y}{4}
Divide both sides by 4.
x=\frac{5y}{4}
Dividing by 4 undoes the multiplication by 4.
4y\times \frac{1}{2}+4y\times \frac{3}{4}=4x
Variable y cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 4y, the least common multiple of 2,4,y.
2y+4y\times \frac{3}{4}=4x
Multiply 4 and \frac{1}{2} to get 2.
2y+3y=4x
Multiply 4 and \frac{3}{4} to get 3.
5y=4x
Combine 2y and 3y to get 5y.
\frac{5y}{5}=\frac{4x}{5}
Divide both sides by 5.
y=\frac{4x}{5}
Dividing by 5 undoes the multiplication by 5.
y=\frac{4x}{5}\text{, }y\neq 0
Variable y cannot be equal to 0.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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