7x=21
-2x-9
x+7=12
2x+2=5
3x-6-2x=10
proszę o szybkie rozwiązanie
DAJE NAJJ
7x=21 /:7
x=3
-2x-9 może -2x=-9?? /:(-2)
x=4,5
x=12-7
x=5
2x=5-2
2x=3 /:2
x=1,5
x-6=10
x=10-6
x=4
7x=21/ :7
x= 3
-2x=9/ :(-2)
x= -4,5
x+7=12/ -7
x= 5
2x= 3/ :2
x= 1,5
x=16
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7x=21 /:7
x=3
-2x-9 może -2x=-9?? /:(-2)
x=4,5
x+7=12
x=12-7
x=5
2x+2=5
2x=5-2
2x=3 /:2
x=1,5
3x-6-2x=10
x-6=10
x=10-6
x=4
7x=21/ :7
x= 3
-2x=9/ :(-2)
x= -4,5
x+7=12/ -7
x= 5
2x+2=5
2x= 3/ :2
x= 1,5
3x-6-2x=10
x=16