HainaPaina
HainaPaina
07-10-2016
Mathematics
contestada
how to solve 4+|7-m|=5
Respuesta :
apologiabiology
apologiabiology
07-10-2016
when
|a|=b
assume
a=b and -a=b
so
4+|7-m|=5
minus 4 from both sides
|7-m|=1
assume
7-m=1 and
-(7-m)=1
7-m=1
minus 7 both sidees
-m=-6
times -1 both sides
m=6
-(7-m)=1
distribute
-7+m=1
add 7 to both sides
m=8
m=6 and 8
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