8,7 + (13,7 - 15,2) - (24,6 - 20,18,7 + (-1,5) - (4,58,7 - 1,5 - 4,7,2 - 4,2,7
Ответ: 2,7
5/6 (4 + x) - 0.4 (x - 3) = 2.(5/6) 4 + (5/6) x - 0.4x + 1.2 = 2.(20/6) + (5/6)x - 0.4x + 1.2 = 2.10/3 + (5/6)x - 0.4x + 1.2 = 2.10/3 + (5/6 - 0.4)x + 1.2 = 2.10/3 + 1/6 x + 1.2 = 2.1/6 x = 2.5 - 10/3 - 1.1/6 x = 0.x = 0.3 x = 1.8
Ответ: x = 1.8
8,7 + (13,7 - 15,2) - (24,6 - 20,1
8,7 + (-1,5) - (4,5
8,7 - 1,5 - 4,
7,2 - 4,
2,7
Ответ: 2,7
5/6 (4 + x) - 0.4 (x - 3) = 2.
(5/6) 4 + (5/6) x - 0.4x + 1.2 = 2.
(20/6) + (5/6)x - 0.4x + 1.2 = 2.
10/3 + (5/6)x - 0.4x + 1.2 = 2.
10/3 + (5/6 - 0.4)x + 1.2 = 2.
10/3 + 1/6 x + 1.2 = 2.
1/6 x = 2.5 - 10/3 - 1.
1/6 x = 0.
x = 0.3
x = 1.8
Ответ: x = 1.8