1. х = 3/ -1/3
х= -9
2. х = -3,8/ 38
х = - 0,1
3. х = 7 - ( -3)
х = 10
4. y = 0.5 - 3.5
y = - 3
5. z = 0- (-6)
z = 6
6. z/5 = - 7 -3
z/5 = -10
z = -50
7. a = 2.8 - (-2.8)
a = 5.6
8. n = -4.5 + 1.4
n = - 3.1
9. x+3 = 6
x = 3
10. 2(1 - y) =-8 -3
1 -y = - 5.5
y= 6.5