Question

a.15+ (8 + x) = 115 + (-8) + (-7)
b.13+y=0
c.-23 + 4x + (-23)
d. 27+ (-27) = 2​

Answer 1

Respuesta:

15+(-8+x)=[15+(-8)]+(-7)

15 - 8 + x = [ 15-8 ] -7  

7 + x  =  7 - 7  

7 + x = 0

x = -7

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