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5%x-0% 10 = 6%y
x-10 = y
0.05x = 0.06(x-10)
0.05x = 0.06x-0.6
-0.01x = -0.6
x = 60
2#
6%x=2%12 -3%y
x+12=y
0.06x = 0.24 - 0.03(x+12)
0.06x = 0.24 - 0.03x - 0.36
0.06x = -0.12 - 0.03x
0.09x = -0.12
x = -1(3)
3#
10%x + 2%y = %20
x+y=20
Z drugiego rown: x = 20-y
0.1(20-y) + 0.02y = ?? %20
2-0.1y + 0.02y = ?? %20
2-0.08y = ?? %20 bład w poleceniu;)