Zadanie 1 Rozwąż równania a 3x=12 b 4x=20 c 2c=14 d 5p=25 e 7b=21 f 12a=24 g 10x=50 h 4x=48 i 9x=45 j 15u=30
3x=12
x=12:3
x=4
------
4x=20
x=20:4
x=5
---------
2c=14
c=14:2
c=7
--------
5p=25
p=25:5
p=5
----------
7b=21
b=21:7
b=3
12a=24
a=24:12
a=2
10x=50
x=50:10
4x=48
x=48:4
x=12
9x=45
x=45:9
15u=30
u=30:15
u=2
a] 3x=12 /:3 x=4b] 4x=20 /:4 x=5c] 2c=14 /:2 c=7d] 5p=25 /:5 p=5e] 7b=21 /:7 b=3f] 12a=24 /:12 a=2g] 10x=50 /:10 x=5h] 4x=48 /:4 x=12i] 9x=45 /:9 x=5j] 15u=30 /:15 u=2
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3x=12
x=12:3
x=4
------
4x=20
x=20:4
x=5
---------
2c=14
c=14:2
c=7
--------
5p=25
p=25:5
p=5
----------
7b=21
b=21:7
b=3
---------
12a=24
a=24:12
a=2
---------
10x=50
x=50:10
x=5
---------
4x=48
x=48:4
x=12
--------
9x=45
x=45:9
x=5
--------
15u=30
u=30:15
u=2
a] 3x=12 /:3
x=4
b] 4x=20 /:4
x=5
c] 2c=14 /:2
c=7
d] 5p=25 /:5
p=5
e] 7b=21 /:7
b=3
f] 12a=24 /:12
a=2
g] 10x=50 /:10
x=5
h] 4x=48 /:4
x=12
i] 9x=45 /:9
x=5
j] 15u=30 /:15
u=2