1) 7x = -95.4 - 4x
7x + 4x = -95.4
11x = -95.4
x = -95.4 / 11
x = -8.672727...
x ≈ -8.67
2) 5/6 y - 3/8 y + 1 = 2/3 y - 1/6
(5/6 - 3/8 - 2/3) y = -1 - 1/6
(20/24 - 9/24 - 16/24) y = -6/6 - 1/6
(-5/24) y = -7/6
y = (-7/6) / (-5/24)
y = (7/6) * (24/5)
y = (7 * 4) / 5
y = 28/5
y = 5.6
Ответ:
1) x ≈ -8.67
2) y = 5.6