diketahui,39:91=(p+1):(3p+1)nilai p adalah?

[tex] \frac{39}{91}= \frac{p+1}{3p+1} \\ 39(3p+1) = 91(p+1) \\ 117p +39 = 91p+91 \\ 117p-91p = 91-39 \\ 26p = 52 \\ p= \frac{52}{26} = 2[/tex]