Question

1. Halla 3M+N, si:
M= +10 -1 + 6 + 5 +8 - 5 - 11
N= (-7 + (-24) + (-3)) - (+14 - 2-5)
A) -28
B) 13
C) -45
D) 30
E) -24​

Answer 1

Explicación paso a paso:

$M = 10 - 1 + 6 + 5 + 8 - 5 - 11 \\ M = 10 + 6 + 5 + 8 - (1 + 5 + 11) \\ M = 29 - 17 \\ M = 12$

$N = ( - 7 + ( - 24) + ( - 3)) - ( + 14 - 2 - 5) \\ N = ( - 7 - 24 - 3) - (14 - 7) \\ N = - 34 - 7 \\ N = - 41$

Hallando

3M + N = 3(12)+ (-41) = 36 - 41 = - 5