Ответ:
а)5x-x=5+7
4x=12
x=3
2)x+1/2=1,6/2,4
x=1,6/2,4=2/3-1/2=4/6-3/6=1/6
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Ответ:
а)5x-x=5+7
4x=12
x=3
2)x+1/2=1,6/2,4
x=1,6/2,4=2/3-1/2=4/6-3/6=1/6