Question

решите со скрина номер 6,7,8

Answer 1

6) 1/(4х+11)=1/10
4х+11=10
4х=10-11= -1
х= -1/4= -0,25

7) 1/(9х+10)=1
9х+10=1
9х=1-10= -9
х= -9/9= -1

8) 1/(5х+7)=1/(7х-6)
7х-6=5х+7
7х-5х=7+6
2х=13
х=13/2=6 1/2=6,5