oblicz:
1) x+7=12
2) 2x-5=10
3) 8x+1=9
4) 10x+2=x-8
x=12-7
x=5
2x=10+5
2x=15|:2
x=7,5
8x=9-1
8x=8|:8
x=1
10x-x=-8-2
-11x=-10|:(-11)
x=10/11
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1) x+7=12
x=12-7
x=5
2) 2x-5=10
2x=10+5
2x=15|:2
x=7,5
3) 8x+1=9
8x=9-1
8x=8|:8
x=1
4) 10x+2=x-8
10x-x=-8-2
-11x=-10|:(-11)
x=10/11