Решить решите систему уравнений {0,3(x+y)=22,2 {0.4(x-y)=6,4

{ 0.3(x + y) = 22.2
{ 0.4(x - y) = 6.4

{ 0.3x + 0.3y = 22.2
{ 0.4x - 0.4y = 6.4

{ x + y = 74
{ x - y = 16

x = 74 - y

74 - y - y = 16
74 - 2y = 16
2y = 74 - 16
2y = 58
y = 29

x = 74 - 29 = 45