Пошаговое объяснение:
2,1х-3(2,5+3,6)=10,4-7,64
2,1х-3×6,1=2,76
2,1х-18,3=2,76
2,1х=2,76+18,3
2,1х=21,06
Х=21 6/100:2 1/10=2106/100:21/10=
=2106/100×10/21=2106/10×1/21=2106/210=
=10 6/210
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Answers & Comments
Пошаговое объяснение:
2,1х-3(2,5+3,6)=10,4-7,64
2,1х-3×6,1=2,76
2,1х-18,3=2,76
2,1х=2,76+18,3
2,1х=21,06
Х=21 6/100:2 1/10=2106/100:21/10=
=2106/100×10/21=2106/10×1/21=2106/210=
=10 6/210