oblicz równanie: 0,2(100+x)=16+x
0,2(100+x)=16+x
20+0,2x=16+x /-x
20-0,8x=16 /-16
4-0,8x=0 /-4
-0,8x=-4 /:(-0,8)
x=5
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0,2(100+x)=16+x
20+0,2x=16+x /-x
20-0,8x=16 /-16
4-0,8x=0 /-4
-0,8x=-4 /:(-0,8)
x=5