Răspuns :
a) 7x + 14 - 10 - 5x = 18
2x = 18 + 10 - 14
2x = 14
x = 14 : 2
x = 7
b) 8x - 2x - 4 = 8
6x = 8 + 4
6x = 12
x = 12 : 6
x = 2
2. a + 2 = b
b * 5 = c
c - 4 = 29
c = 29 + 4
c = 33
5b = 33
b = 33/5
a + 2 = 33/5
10a + 10 = 33
10a = 33 - 10
10a = 23
a = 23/10
2x = 18 + 10 - 14
2x = 14
x = 14 : 2
x = 7
b) 8x - 2x - 4 = 8
6x = 8 + 4
6x = 12
x = 12 : 6
x = 2
2. a + 2 = b
b * 5 = c
c - 4 = 29
c = 29 + 4
c = 33
5b = 33
b = 33/5
a + 2 = 33/5
10a + 10 = 33
10a = 33 - 10
10a = 23
a = 23/10