Ответ:
Пошаговое объяснение:
(x +x +3.1 -0.5x +4.9)/3 = 3.5
1.5x =+ 8 = 10.5
1.5x = 2.5
3/2 x = 5/2
x = 5/3
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Ответ:
Пошаговое объяснение:
(x +x +3.1 -0.5x +4.9)/3 = 3.5
1.5x =+ 8 = 10.5
1.5x = 2.5
3/2 x = 5/2
x = 5/3
х + х + 31/10 - 1/2х + 49/10 = 21/2
2х - 1/2х + 80/10 = 21/2
3/2х + 8 = 10 1/2
3/2х = 10 1/2 - 8
3/2х = 9 3/2 - 7 2/2
3/2х = 2 1/2
х = 2 1/2 : 3/2
х = 5/2 * 2/3
х = 5/3
х = 1 2/3