Мартуш 1) y - (7/12 y) = 4 1/6
y - 7/12 y = 4 1/6
12/12 y - 7/12 y = 4 1/6
5/12 y = 4 1/6
y = 4 1/6 : 5/12
y= 5/1 • 2/1y = 10.
2) (3.1x + x) : 0.8 = 2.05
4.1 x : 0.8 = 2.05
4.1 x = 2.05 • 0.8
4.1 x = 1, 64
x = 16,4 : 41
x = 164 : 410
x = 0.4