Question

Прошу срочно умоляю ребята

Answer 1

Ответ:

Пошаговое объяснение:

a) -4x + 1,1y + 35x - 3,8y = 31x - 2,7y

б) -7(a - 4) + 6(6 - a) = -7a + 28 + 36 - 6a = -13a + 64

в) 0,7x * (-8y) = -5,6xy

г) -9a * (-10b) = 90ab

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a)

7x + 56 = 14

7x = 14 - 56

7x = -42

x = -42:7

x = -6

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б)

8(x - 2) - 3x = 4

8x - 16 - 3x = 4

5x = 4+16

5x = 20

x = 20:5

x = 4

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в)////////////////////////

9*(3y - 4) = 4*(y - 2)

27y - 36 = 4y - 8

27y - 4y = 36 - 8

23y = 28

y = 28:23

y = 1 5/23