1. [ATTACH=full]3783[/ATTACH] .........you can solve it only using calculator
x≈1.36521
x≈4.5512×10^-9 which is very close to x=0
2.
[ATTACH=full]3784[/ATTACH]
[ATTACH=full]3785[/ATTACH]
[ATTACH=full]3786[/ATTACH]
5log(6)+ 5log(5) = x* log(6)- x*log(5)
5(log(6)+ log(5)) = x(log(6)- log(5))
[ATTACH=full]3793[/ATTACH]
x=93.28 approximately
