Question

1) Afla necunoscutele :​

Answer 1

Răspuns:

Explicație pas cu pas:

1)

( 6×4 : 3 + c ) : 7 = 16 : 4

( 24 : 3 + c ) : 7 = 4

( 8 + c) : 7 = 4

s : 7 = 4

s = 4 × 7

s = 28

8 + c = 28

c = 28 - 8

c = 20

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2.

( 96 - 3 × 4 - 5 × 8 ) + f - 9 × 7 = 13

( 96 - 12 - 40 ) + f - 63 = 13

( 84 - 40 ) + f - 63 = 13

44 + f - 63 = 13

s - 63 = 13

s = 13 + 63

s = 76

44 + f = 76

f = 76 - 44

f = 32

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3)

( 47 + 7 ) : i = 28 : 4 + 42 : 6 - 35 : 7

54 : i = 7 + 7 - 5

54 : i = 14 - 5

54 : i = 9

i = 54 : 9

i = 6