−27x + 220 = −5x
−27x + 5x = −220
−22x = −220
x = 10

7a = −310 + 3a
7a − 3a = −310
4a = −310
a = −77,5

−2x + 16 = 5x − 19
−2x − 5x = −19 − 16
−7x = −35
x = 5

25 − 3b = 9 − 5b
−3b + 5b = 9 − 25
2b = −16
b = −8

3 + 11y = 203 + y
11y − y = 203 − 3
10y = 200
y = 20

3 * (4x − 8) = 3x − 6
12x − 24 = 3x − 6
12x − 3x = −6 + 24
9x = 18
x = 2

−4 * (−z + 7) = z + 17
4z − 28 = z + 17
4z − z = 17 + 28
3z = 45
z = 15

с − 32 = (с + 8) * (−7)
c − 32 = −7c − 56
c + 7c = −56 + 32
8c = −24
c = −3

12 − 2 * (k + 3) = 26
12 − 2k − 6 = 26
−2k = 26 − 12 + 6
−2k = 20
k = −100

−5 * (3а + 1) − 11 = −16
−15a − 5 − 11 = −16
−15a = −16 + 5 + 11
−15a = 0
a = 0

−3,2n + 4,8 = −2 * (1,2n + 2,4)
−3,2n + 4,8 = −2,4n − 4,8
−3,2n + 2,4n = −4,8 − 4,8
−0,8n = −9,6
n = 12

−5 * (0,8z − 1,2) = −z + 7,2
−4z + 6 = −z + 7,2
−4z + z = 7,2 − 6
−3z = 1,2
z = −0,4