Explicación paso a paso:
a/
[tex] - 2( - 7 + 11) - 5 - ( - 2 + ( - 3 + 5) - (4 - ( 2 + 3))) = [/tex]
[tex] - 2(4) - 5 - ( - 2 + 2 ) - ( 4 - 5) = [/tex]
[tex] - 8 - 5 - 0 - ( - 1) = [/tex]
[tex] - 13 - 0 + 1 = [/tex]
[tex] = - 12[/tex]
b/
[tex] - 11 + 7 - 2( - 4 + 1 - ( - 2( - 3 + 4) - 2 + 4 + 7 - 8) - 4) = [/tex]
[tex] - 6( - 3 - ( - 2 + 4) + 1 - 4 = [/tex]
[tex] - 6( - 3 - (2) + 1 - 4 = [/tex]
[tex] - 6( - 3 - 2 + 1 - 4) = [/tex]
[tex] - 6 - 8 = [/tex]
[tex] = - 14[/tex]
espero te sirva saludos*
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Explicación paso a paso:
a/
[tex] - 2( - 7 + 11) - 5 - ( - 2 + ( - 3 + 5) - (4 - ( 2 + 3))) = [/tex]
[tex] - 2(4) - 5 - ( - 2 + 2 ) - ( 4 - 5) = [/tex]
[tex] - 8 - 5 - 0 - ( - 1) = [/tex]
[tex] - 13 - 0 + 1 = [/tex]
[tex] = - 12[/tex]
b/
[tex] - 11 + 7 - 2( - 4 + 1 - ( - 2( - 3 + 4) - 2 + 4 + 7 - 8) - 4) = [/tex]
[tex] - 6( - 3 - ( - 2 + 4) + 1 - 4 = [/tex]
[tex] - 6( - 3 - (2) + 1 - 4 = [/tex]
[tex] - 6( - 3 - 2 + 1 - 4) = [/tex]
[tex] - 6 - 8 = [/tex]
[tex] = - 14[/tex]
espero te sirva saludos*