Question

X+2\4+ x+3\5 = 20 me ajudem

Answer 1

Resposta:

×+2/4+×+3/5=20

5(×+2)+4(×+3)=400

5×+10+4(×+3)=400

5×+10+4×+12=400

9×+10+12=400

9×+22=400

9×=400-22

9×=378

×=42

espero ter ajudado :)