Предмет: Математика, автор: lera34403

Срочно! те, що відмічено червоним​

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Автор ответа: milqawix
0

Пошаговое объяснение:

494. 1) a + 0,2 = 5 => a = 5-0,2 => a = 4,8

2) 4,6 - b =1,4 => b = 4,6 - 1,4 => b = 3,2

3) c - 0,9 = 0,5 => c = 0,9 + 0,5 => c =1,4

4) 3,9 +d = 6,4 => d = 6,4 - 3,9 => d  = 2,5

550.

a) +2+8 = 10

b)-5 - 4 = -9

в) +3 - 11 =8

г)7 - 25 = - 18

д) 9 + 3 = 12

е) -8+1 = 7

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