Question

a/5-2/5-a/2+3/2=22/4-a/2+1/2

Answer 1

Vamos lá:

$\frac{A}{5}- \frac{2}{5} - \frac{A}{2}+ \frac{3}{2}= \frac{22}{4}- \frac{A}{2}+ \frac{1}{2} \\ \ \frac{A}{5}- \frac{2}{5} - \frac{A}{2}+ \frac{3}{2}= \frac{11}{2}- \frac{A}{2}+ \frac{1}{2} \\ \frac{2A-4-5A+15}{10}= \frac{11-A+1}{2} \\ \frac{11-3A}{10}= \frac{12-A}{2} \\ \frac{11-A}{5}= \frac{12-A}{1} \\ 11-A=120-5A \\ 4A=120-11 \\ 4A=109 \\ A=27,25$