Question

Tìm số nguyên x , biết:
a) x−(−15)=−13−(−85−13)

b)(−9−x)+(x−14)=17−(−8+x)

Answer 1

a) x−(−15)=−13−(−85−13)

=> x+15=85

=>x=70

b) (−9−x)+(x−14)=17−(−8+x)

=>-9-x+x-14=17+8-x

=>-23=25-x

=>x=48

Answer 2

a, x=70

b,x=48

kick nha

Answer 3

a) x−(−15)=−13−(−85−13)

=> x+15=85

=>x=70

b) (−9−x)+(x−14)=17−(−8+x)

=>-9-x+x-14=17+8-x

=>-23=25-x

=>x=48

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