Пошаговое объяснение:
x + (1/3)x + 0.3x = 1
x(1 + 1/3 + 3/10) = 1
x(4/3 + 3/10) = 1
x(40/30 + 9/30) = 1
(49/30)x = 1
x = 1/(49/30) = 30/49
Пошаговое объяснение:
x + (1/3)x + 0.3x = 1
x(1 + 1/3 + 3/10) = 1
x(4/3 + 3/10) = 1
x(40/30 + 9/30) = 1
(49/30)x = 1
x = 1/(49/30) = 30/49