Question

Tim x biet

a) |x| + |-5| =|-37|

b) |-6|.|x|=|54|

Answer 1

a)|x|+|-5|=|-37|

=>|x|+5=37

=>|x|=37-5

=>|x|=32

=>x thuộc{32,-32}

b)|-6|.x=|54|

=>6.|x|=54

=>|x|=54:6

=>|x|=9

=> x thuộc {9,-9}

Answer 2

a,|x|=37-5

|x|=32 => x= -32;32

b,6.|x|=54

|x|=54:6=9

=>x=9 ; -9

Answer 3

a)32 hoặc -32

b)9 hoặc -9, tick mik nha

Answer 4

a)lxl+l-5l=l-37l

=>lxl+5=37=>lxl=32=>x\(\in\){-32;32}

b)l-6l.lxl=l54l

=>6lxl=54=>lxl=54:6=9=>x\(\in\){-9;9}