Question

find a if a+3/a-2=a+2/a-7
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Answer 1

Answer:

$\\ \frac{a+3}{a-2}=\frac{a+2}{a-7} \\\\ (a+3)(a-7)=(a+2)(a-2)\\\\ a^2 +3a-7a-21=a^2-4\\\\ -4a-21=4\\\\ -4a=25\\\\ a=\frac{-25}{4}$

Answer 2

solution;

a+3/a-2=a+2/a-7

(​a+3)(a-7)=(a+2)(a-2)

a²-7a+3a-21=a²-2a+2a²-4

a²-4a-21=a²-4

a²-a²-4a=-4+21

-4a=17

a=-17/4