Question

пожалуйста Решите уравнение прошу обычным методом

Answer 1

5)

60a - 30 = 18 * 5

60a - 30 = 90

60a = 90 + 30

60a = 120

a = 120 : 60

a = 2

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6)

56 : (14 - b) = 100 - 92

56 : ( 14 - b) = 8

14 - b = 56 : 8

14 - b = 7

b = 14 - 7

b = 7

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7)

(c : 9) * 15 = 28 + 47

(c : 9) * 15 = 75

c : 9 = 75 : 15

c : 9 = 5

c = 5 * 9

c = 45

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8)

(410 - d) : 7 = 120 - 70

(410 - d) : 7 = 50

410 - d = 50 * 7

410 - d = 350

d = 410 - 350

d = 60