Si a = -1, b = -2, c = -3 y d = -4
Remplazamos en la expresión
[tex](- a + b(d - c) ) - a = ( - ( - 1) + ( - 2)( - 4 - ( - 3))) - ( - 1) \\ \\ = (1 - 2( - 1)) + 1 \\ \\ = (1 + 2) + 1 \\ \\ = 3 + 1 \\ \\ = 4[/tex]
Por tanto, a) es la opción correcta
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Verified answer
Si a = -1, b = -2, c = -3 y d = -4
Remplazamos en la expresión
[tex](- a + b(d - c) ) - a = ( - ( - 1) + ( - 2)( - 4 - ( - 3))) - ( - 1) \\ \\ = (1 - 2( - 1)) + 1 \\ \\ = (1 + 2) + 1 \\ \\ = 3 + 1 \\ \\ = 4[/tex]
Por tanto, a) es la opción correcta