9x+(6-2x)=15
9x + 6 – 2x = 15
9x – 2x = 15 – 6
7x = 9
x = 9/7
х=1,28571428571
2x-(5x+4)=-8
2x – 5x – 4 = – 8
2x – 5x = – 8 + 4
-3x = -4
x = -4/-3
х=1,33333333333
5-3(2x-7)=-6x
5 – 6x + 21 = – 6x
– 6x + 6x = – 21 – 5
0x = -26
уравнение решений не имеет
9x+(6-2x)=15
9x + 6 – 2x = 15
9x – 2x = 15 – 6
7x = 9
x = 9/7
х=1,28571428571
2x-(5x+4)=-8
2x – 5x – 4 = – 8
2x – 5x = – 8 + 4
-3x = -4
x = -4/-3
х=1,33333333333
5-3(2x-7)=-6x
5 – 6x + 21 = – 6x
– 6x + 6x = – 21 – 5
0x = -26
уравнение решений не имеет