а) 9х +5х+8=12
9x + 5x = 12 – 8
14x = 4
7x = 2
x = 2/7
х=0,28571428571
б) 16-(2х+5)=10
16 – 2x – 5 = 10
– 2x = 10 + 5 – 16
-2x = -1
x = 0.5
а) 9х +5х+8=12
9x + 5x = 12 – 8
14x = 4
7x = 2
x = 2/7
х=0,28571428571
б) 16-(2х+5)=10
16 – 2x – 5 = 10
– 2x = 10 + 5 – 16
-2x = -1
x = 0.5