Question

X+Y=225,Xmai mare decât Y X:Y=21 rest5​

Answer 1

Explicație pas cu pas:

x=21y+5 (x:y=21 rest 5)

x+y=225,

21y+5+y=225

22y=225-5

22y= 220

y=220:22

y=10

x=21*10+5=215

Answer 2

Răspuns:

X:Y=21 rest 5

X=21Y+5

21Y+5+Y=225

22Y+5=225

22Y=225-5

22Y=220

Y=220:22=10

X+10=225

X=225-10

X=215