№440

решите уравнения

1)- 13,7 - (-х) = - 4Б9

2)6Б1 - (-у) = - 5,2

3) - 2,9 + (-x) = - 3 ,8

4 x + (-0,35) = 2,3

5) - 23,5 = (-y) = -78,5

6) y + (-48,3) = - 78,5
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