1) a=primul vas
b=al 2 lea vas
c=al 3 lea vas
a+b+c=865
b=a+360
c=b+58
c=a+360+58
c=a+418
a+a+360+a+418=865
3×a+778=865
3×a=865-778
3×a=87
a=29 litri
b=29+360
b=389 litri
c=389+58
c=447 litri
2) a=2568
b=1/6 ×a
b=1/6×2568
b=428
c=3/4×b
c=3/4×428
c=3×107
c=321
d=5/7×(b+c)
d=5/7×(428+321)
d=5/7×749
d=5×107
d=535
a+b+c+d=2568+428+321+535
=2996+856
=3852
3) vaci=4 picioare
gaini=2 picioare
g+v=98
g×2+v×4=252
g+v×2=126
(g+v×2)-(g+v)=g+v×2-g-v=v=126-98=28
v=28
g=98-28
g=70
4)
[tex] (\frac{165}{10} - \frac{136}{10} ) \div \frac{25}{100} + ( \frac{8}{33} - \frac{1}{11}) \times \frac{125}{1000} = [/tex]
[tex] \frac{129}{10} \times \frac{100}{25} + ( \frac{8}{33} - \frac{3}{33} ) \times \frac{125}{1000} = [/tex]
[tex] \frac{12900}{250} + \frac{5}{33} \times \frac{125}{1000} = [/tex]
[tex]51.6 + \frac{625}{33000} = [/tex]
[tex]51.6 + \frac{1}{52.8} = \frac{2724.48}{52.8} + \frac{1}{52.8} = \frac{2725.48}{52.8} [/tex]
