Odpowiedź:
a) x=25-15
x=10
b)-x=-1-7
-x=-8
x=8
c)-x=5-3
-x=2
x=-2
d)x=4+16
x=20
e)x=7
f)4x=36
x=9
g)x/8=4
x=32
h)64/x=16
64=16x
x=4
15 + x = 25
x = 25 - 15
x = 10
7 - x = -1
x = -1 - 7
-x = -8
x = 8
3 - x = 5
-x = 5 - 3
-x = 2
x = -2
x - 16 = 4
x = 4 + 16
x = 20
3x = 21
x = 21 : 3
x = 7
x * 4 = 36
x = 36 : 4
x = 9
x : 8 = 4
x = 4 * 8
x = 32
64 : x = 16
x = 64 : 16
x = 4
