Question

Resuelve de dos maneras diferentes
-(3+15)+(-6+2)
-(3+15)-(-6+2)
-(-4)+(-7)-(-3+2)
-(-4-7)-(-3+2)
+8-(-5+4)-(-6-11)+(3-15+7)
+8-(-5+4)-(-6-11+3-15+7)

Answer 1

Respuesta:

$- (3 + 15) + ( - 6 + 2) = - 18 + ( - 4) = - 22 \\ - (3 + 15) + ( - 6 + 2) = - 3 - 15 - 6 + 2 = - 18 - 6 + 2 = - 24 + 2 = - 22$

$- ( - 4) + ( - 7) - ( - 3 + 2) = - ( - 4) + ( - 7) - ( - 1) = 4 - 7 + 1 = - 3 + 1 = - 2 \\ - ( - 4) + ( - 7) - ( - 3 + 2) = + 4 - 7 + 3 - 2 = - 3 + 3 - 2 = 0 - 2 = - 2$

$8 - ( - 5 + 4) - ( - 6 - 11) + (3 - 15 + 7) = 8 - ( - 1) - ( - 17) + ( - 5) = 8 + 1 + 17 - 5 = 9 + 17 - 5 = 26 - 5 = 21 \\ 8 - ( - 5 + 4) - ( - 6 - 11) + (3 - 15 + 7) = 8 + 5 - 4 + 6 + 11 + 3 - 15 + 7 = 13 - 4 + 6 + 11 + 3 - 15 + 7 = 9 + 6 + 11 + 3 - 15 + 7 = 15 + 11 + 3 - 15 + 7 = 26 + 3 - 15 + 7 = 29 - 15 + 7 = 14 + 7 = 21$