Respuesta :

Yisrael777

Answer:

1) -66

2)

Step-by-step explanation:

Given:

a=4

b=-5

c=-7

=a+2bc

=4+2*-5*7

=4+(-10*7)

=4-70

=-66

=3a

=3(4)

=12

Hope this helps ;) ❤❤❤

Answer:

-66, 12

Step-by-step explanation:

4+2 times-5 times -7 times

-70+4= 66