a) 5x-17=13-x
5x + x = 13 + 17
6x = 30
x = 5
б)4x-9(x-7)=-12
4x – 9x + 63 = – 12
4x – 9x = – 12 – 63
-5x = -75
x = 15
в)0,4(3x+1)=5,6-3(2-0,4x)
1.2x + 0.4 = 5.6 – 6 + 1.2x
1,2x – 1,2x = – 6 + 5,6 – 0,4
0x = -0.8
уравнение решений не имеет
a) 5x-17=13-x
5x + x = 13 + 17
6x = 30
x = 5
б)4x-9(x-7)=-12
4x – 9x + 63 = – 12
4x – 9x = – 12 – 63
-5x = -75
x = 15
в)0,4(3x+1)=5,6-3(2-0,4x)
1.2x + 0.4 = 5.6 – 6 + 1.2x
1,2x – 1,2x = – 6 + 5,6 – 0,4
0x = -0.8
уравнение решений не имеет