Question

Stiind ca m este parametru real,rezolvati in R ecuatia
a)3-mx=2m(x+1)-1
b)mx+m+3=x+4
c)2(mx+x)-3(x+4)=5-m

Answer 1

a)3-mx=2m(x+1)-1
3-mx=2mx+2m-1
3mx=4-2m
x=(4-2m)/3m


 b)mx+m+3=x+4
mx-x=4-m-3
x(m-1)=1-m
x=(1-m)/(m-1)=-1

 c)2(mx+x)-3(x+4)=5-m
2mx+2x-3x-12=5-m
2mx-x-17+m=0
x(2m-1)=17-m
x=(17-m)/(2m-1)