Question

b. - (9ab + abc + 4bc - 7) + (10ab + (55abc - 37ab)]
c. -{(3xy +385 +55) - 10xy - (5x + 21 - (12xy +7)]}​

Answer 1

Respuesta:

b.- -18ab+56abc+4bc-7

c.-5xy+421

Explicación paso a paso:

b.-(9ab+abc+4bc-7)+(10ab+(55abc-37ab))

(9ab+abc+4bc-7)+(10ab+55abc-37ab)

9ab+abc+4bc-7+55abc-27ab

-18ab+56abc+4bc-7

c.-{(3xy +385 +55) - 10xy - (5x + 21 - (12xy +7)]}

[3xy+440-10xy-(5+21-12xy-7)]

-7xy+440-19+12xy

5xy+421

espero te sirva!