Question

[OoO Phương Uyên OoO Kute OoO]

tìm số nguyên x, biết:

a) 11- (15 + 11) = x - (25 - 9)

b) 2 - x = 17 - (-5)

c) x - 12 = (-9) -15

2k5 cùg tủi pr ik #u

Answer 1

[nghia]

a) 11-(15+11)=x-(25-9)

=>  11-15-11=x-16

=> -15 = x-16

=>x=1

b) 2-x=17-(-5)

=> 2-x=22

=>x=-20

c) x-12=-9-15

=>x-12=-26

=>x=-14

mik 2k5 nà bạn  ^-^

Answer 2

[Nguyễn Anh Huy]

a.11-26=x-16

-15=x-16

x=-15+16=1

b.2-x=22

x=2-22=-20

c.x-12=-24

x=-24+12=-12