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A = 36 - 17,2
A = 18,8
2 1/2 -b=1 1/3
2 1/2 = b + 1 1/3
b = 2 1/2 - 1 1/3 = 2 3/6 - 1 2/6 = 1 1/6
c -4,2=6 1/2
c = 6 1/2 + 4,2 = 6,5 + 4,2 = 10,7
3 1/3*d=2 2/9
10/3 * d = 20/9
obie strony rownania mnozymy przez 3/10
d = 20/9 * 3/10 = 2/3
e/5=1/2
e = 1/2 * 5 = 5/2 = 2 1/2
2,1/f=0,2
2,1 = 0,2 * f
obie strony rownania dzielimy przez 0,2
f = 10,5
pierwsze
tylko tyle mogłam