0,01=1%
0,29 = 29%
0,8= 80%
1=100%
ОДЗ
x+5>0
x>-5
log(2)(x+5)=log(2)(x+5)/log(2)3
[log(2)3*log(2)(x+5)-log(2)(x+5)]/log(2)3=0
log(2)(x+5)(log(2)3-1)=0
log(2)(x+5)=0
x+5=1
x=-4
Mk=mf-kf=30-22=8см
ke=me-mk=18-8=10см я думаю так.
4 1/9 : х = 7,4
37/9 : х = 37/5
х = 37/9 : 37/5 = 37/9 * 5/37
х = 5/9