Question

am ales un numar,l-am inmultit cu 5,la rezultata am adunat 50,suma obtinuta am impartit-o la 9 si din cat am scazut 22,obtinand 428.ce numar am ales?Ajutooooooooooooooooor!!!!!!!!!!!!!!

Answer 1

a*5=b
b+50=c
c:9=cat+rest
cat-22=428
iei invers acum
iei asa
x-22=428
x=450
suma:9=450
suma=4050
4050-50=4000
a*5=4000
a=800
deci numarul ales este 800

Answer 2

(x*5+50) : 9-22=428
(x*5+50): 9=428+22
x*5+50=450*9
x*5=4050-50
x=4000: 5
x=800