Номер 375
б) 6х=4х+10
6x – 4x = 10
2x = 10
x = 5
в)z=6-5z
z+5z=6
6z=6
z=1
номер376
а) х+2=4-х
x + x = 4 – 2
2x = 2
x = 1
б)3х+1=5х-3
3x – 5x = – 3 – 1
-2x = -4
x = 2
в)2х-3=2-3х
2x + 3x = 2 + 3
5x = 5
номер377
а)10-7х=7-х
– 7x + x = 7 – 10
-6x = -3
x = 0.5
б) t+6,8=9t +10
t – 9t = 10 – 6,8
-8t = 3.2
t = -0.4
в)1+ 2,6z=6+3z
2,6z – 3z = 6 – 1
-0.4z = 5
z = -12.5
Номер 375
б) 6х=4х+10
6x – 4x = 10
2x = 10
x = 5
в)z=6-5z
z+5z=6
6z=6
z=1
номер376
а) х+2=4-х
x + x = 4 – 2
2x = 2
x = 1
б)3х+1=5х-3
3x – 5x = – 3 – 1
-2x = -4
x = 2
в)2х-3=2-3х
2x + 3x = 2 + 3
5x = 5
x = 1
номер377
а)10-7х=7-х
– 7x + x = 7 – 10
-6x = -3
x = 0.5
б) t+6,8=9t +10
t – 9t = 10 – 6,8
-8t = 3.2
t = -0.4
в)1+ 2,6z=6+3z
2,6z – 3z = 6 – 1
-0.4z = 5
z = -12.5