Question

a×9+7×5-3×9=80,,,175+7×0-b:9=166,,,(901-859):9-3×2=1 ,,,28:b×9-6×10=3;;;(100-10×9):b×5=10​

Answer 1

Răspuns:

Explicație pas cu pas:

a×9+7×5-3×9=80

a x 9 + 35 - 27 = 80

a x 9 = 80 - 35 + 27

a x 9 = 72

a = 72 : 9

a = 8

175+7×0-b:9=166

175 + 0 - b : 9 = 166

175 - b : 9 = 166

b : 9 = 175 - 166

b : 9 = 9

b = 9 x 9

b = 81

(901-859):9-3×2=1  Verifica enuntul , cred ca e ceva gresit la el .

28:b×9-6×10=3

28 : b x 9 - 60 = 3

28 : b x 9 = 3 + 60

28 : b x 9 = 63

28 : b = 63 : 9

28 : b = 7

b = 28 : 7

b = 4

(100 - 10 × 9 ) : b × 5 = 10​

( 100 - 90 ) : b x 5 = 10

10 : b x 5 = 10

10 : b = 10 : 5

10 : b = 2

b = 10 : 2

b = 5