1) 3.5 - x = -1.8x = 3.5 + 1.8x = 5.3
Ответ: x = 5.3
2) y + 1 = -2 1/7y = -2 1/7 - 1y = -2 1/7 - 7/7y = -2 8/7y = - 22/7
Ответ: y = -22/7
1) 3.5 - x = -1.8
x = 3.5 + 1.8
x = 5.3
Ответ: x = 5.3
2) y + 1 = -2 1/7
y = -2 1/7 - 1
y = -2 1/7 - 7/7
y = -2 8/7
y = - 22/7
Ответ: y = -22/7