Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$i - \frac { x + y } { z } + \frac { y + z } { x }$$

Evaluate

$\frac{z^{2}+yz+ixz-xy-x^{2}}{xz}$

Expand

$\frac{z^{2}+yz+ixz-xy-x^{2}}{xz}$

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