Question

hola me ayudan!!!!!!​

Answer 1

Respuesta:

a. 133

b. 75

c. 108

d. 323

e. 308

f. 4995

Explicación paso a paso:

a. 19 . 7 = (20 - 1) . 7 = 20.7 - 1.7 = 140 - 7 = 133

b. 23 . 5 = (20 + 3) . 5 = 20.3 + 3.5 = 60 + 15 = 75

c. 18 . 6 = (20 - 2) . 6 = 20.6 - 2.6 = 120 - 12 = 108

d. 17 . 19 = 17 . (20 - 1) = 17.20 - 17.1 = 340 - 17 = 323

e. 11 . 28 = (10 + 1) . 28 = 10.28 + 1.28 = 280 + 28 = 308

f. 5 . 999 = 5 . (1000 - 1) = 5.1000 - 5.1 = 5000 - 5 = 4995

Answer 2

Respuesta:

a. 133

b. 75

c. 108

d. 323

e. 308

f. 4995

Explicación paso a paso:

a. 19 . 7 = (20 - 1) . 7 = 20.7 - 1.7 = 140 - 7 = 133

b. 23 . 5 = (20 + 3) . 5 = 20.3 + 3.5 = 60 + 15 = 75

c. 18 . 6 = (20 - 2) . 6 = 20.6 - 2.6 = 120 - 12 = 108

d. 17 . 19 = 17 . (20 - 1) = 17.20 - 17.1 = 340 - 17 = 323

e. 11 . 28 = (10 + 1) . 28 = 10.28 + 1.28 = 280 + 28 = 308

f. 5 . 999 = 5 . (1000 - 1) = 5.1000 - 5.1 = 5000 - 5 = 4995

Explicación paso a paso:ahi esta espero que te ayude