Rozwia z układ równań :
a) 2a+2b=54
a/b=4/5
a/b=4/5|*b
a=0,8b
2*0,8b+2b=54
1,6b+2b=54
3,6b=54|:3,6
b=15
a=0,8*15
a=12
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a) 2a+2b=54
a/b=4/5|*b
a=0,8b
2*0,8b+2b=54
1,6b+2b=54
3,6b=54|:3,6
b=15
a=0,8b
a=0,8*15
a=12