20\(\scriptsize \left\{\begin{matrix} 3x-5y=3 \\-12x+15y=-11\end{matrix}\right. \)
21\(\scriptsize \left\{\begin{matrix} 0x+0y =0\\x+y=0 \\ \end{matrix}\right. \)
22\(\scriptsize \left\{\begin{matrix} 0x+0y=0\\ 0x+0y=0 \end{matrix}\right. \)
23\(\scriptsize \left\{\begin{matrix} x-2y=1\\\cdots\cdots \end{matrix}\right. \)
24\(\scriptsize \left\{\begin{matrix} 0x+0y=0\\x=2y\end{matrix}\right. \)
25\(\scriptsize \left\{\begin{matrix} 3x=0 \\6y=2\end{matrix}\right. \)
26\(\scriptsize \left\{\begin{matrix} x-y=0\\ y-x=0 \end{matrix}\right. \)
27\(\scriptsize \left\{\begin{matrix} -2x+3y=5\\ 6x-9y=-15 \end{matrix}\right. \)
28\(\scriptsize \left\{\begin{matrix} x+4y=15\\2x+8y=15\end{matrix}\right.\)
29\(\scriptsize \)stelsel_8
30\(\scriptsize \left\{\begin{matrix} 0x+0y =0\\x+y=0 \\ \end{matrix}\right. \)
31\(\scriptsize \left\{\begin{matrix} 2x+y=12\\3x+\frac 32{} = 18\end{matrix}\right. \)
32\(\scriptsize \left\{\begin{matrix}\pi x+\pi y="0" \\-\pi x+\pi^2y=0\end{matrix}\right.\)
33stelsel_12
34stelsel_13
35stelsel_14
36\(\scriptsize \left\{\begin{matrix}2x+4y=9 \\3x+6y=6\end{matrix}\right.\)
37stelsel ?
38stelsel_16
39welke strijdig
40welke één oplossing
41vraagstuk
42\(\scriptsize \left\{\begin{matrix}3x-5y=32\\2x+4y=3\end{matrix}\right. \)

50\(\scriptsize \left\{\begin{matrix} |x|+|y|=5\\|xy|=6 \end{matrix}\right. \)
51 waar snijpunt ?
52 x²+y²=255 ∧ x²−y²=63
53 met logaritmen
54 meer dan één opl.
55 GEEN oplossingen
56 afhankelijk-strijdig
57 \(\small \left\{\begin{matrix} mx-my=2 \\2x+(m-3)y=4\end{matrix}\right. \)
58 \(\small \left\{\begin{matrix}ax-2y=2 \\-x+y=b\end{matrix}\right.\)
59 \(\small \left\{\begin{matrix}x+4ky=3 \\-3x+3y=-9\end{matrix}\right.\)
60 stelsel par.vgln. van rechte