16) p=94cm
L1=X+9---> lado maior
L2=X
2x+2x+18=94
4x=76
x=19cm
L2=19cm
L1=9+19=28cm
"ALTERNATIVA D "
17)
[tex]x + \frac{x}{2} = 162 \\ 2x + x = 324 \\ 3x = 324 \\ x = 108[/tex]
""ALTERNATIVA B""
18)
[tex]x - \frac{x}{5} = 72 \\ \\ 5x - x = 360 \\ 4x = 360 \\ x = 90[/tex]
""ALTERNATIVA A""
19)
[tex]3x + \frac{x}{2} = 98 \\ \\ 6x + x = 196 \\ 7x = 196 \\ x = 28[/tex]
""ALTERNATIVA C""
