1) 15,56х+27,7х-9,3х-х
2) -8(4а+8)-(2+а)+2(8+5а)
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1) х = 0

2) а =

Пошаговое объяснение:

1) 15,56х+27,7х-9,3х-х  = 0

32,96х = 0

х =

х = 0

2) -8(4а+8)-(2+а)+2(8+5а) = 0

-32а - 64 - 2 -  а - 16 + 10а = 0

-23а - 50 = 0

-23а = 50

а =

1) 15.56x + 27.7x - 9.3x - x = 15.56x + 27.7x - 9.3x - 1x = (15.56+27.7-9.3-1)*x = 32.96x

2) -8(4a+8) - (2+a) + 2(8+5a) = -32a - 64 - 2 - a + 16 + 10a = -23a - 50