Question

Rozwiąż i sprawdź :

1/3 * y + 4 = 9

Answer 1

1/3*y+4=9

1/3y= 9-4

1/3y=5    /*3

y=15

 

1/3*15+4=9

5+4=9

9=9

Answer 2

1/3*y+4=9 |*3
y+12=27
y=27-12
y=15

spr.
1/3*15+4=9