~7)~
[tex](3×4×5)
=1.585 + 2 + 2.322
=5.907[/tex]
~8)
[tex](3÷2÷5)
=1.585 - 1 - 2.322
=-1.737[/tex]
9)[tex]3log7(2) -2log7(3) + 4log7(3) -2log7(2)
=0.356+2(0.565)
=1.486[/tex]
9)[tex]x(x+2)=8
x=2[/tex]
10)[tex]x/(2x+3)=1/9
9x=2x+3
x=3/7[/tex]
Hope this helps
