Odpowiedź:
Zad.1
a) x = 2
b) x = 4
c) x = 60
d) x = 5
Zad.2
a) x = 1
b) x = -4
c) x = 16
d) x = -1,7
e) x = 7
f) x = 36
g) x = 27
h) x = 18
Zad.3
a) -x - 5 = 2
-x = 7
x = -7
b) -x - 1 1/8 = - 2 3/8
-x = -2 3/8 + 1 1/8
-x = -1,25
x = 1,25
c) -x + 1,4 = -5,3
-x = -5,3 - 1,4
-x = -6,7
x = 6,7
d) 3x = -15
x = -5
Zad.4
a) 5x = 6
x = 6/5 = 1 1/5
b) 3x = 14
x = 14/3 = 4 2/3
c) -2x = 4
x = -2
d) -4x = 16
x = -4
Zad.5
a) x + 8 = 100
x = 92
b) x - 6 = 8
x = 14
c) x + 1 = -6
