1,6х + 14 = 0,4х + 0.4
1,6х - 0,4х = 0,4 - 14
1,2х = - 13,6
х = - 13,6 : 1,2
х = - 13 6/10 : 1 2/10
x = - 13 3/5 : 1 1/5
x = - 68/5 : 6/5
x = - 68/5 * 5/6
x = - 11 1/3
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- 4 * (3 - 5y) = 3 * (6y - 2) - 4
- 12 + 20y = 18y - 6 - 4
20y - 18y = - 10 + 12
2y = 2
y = 2 : 2
у = 1
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