2x-5=11 /+5
2x = 11+5
2x = 16 /:2
x = 16:2
x = 8
3x + 11 = 17 /-11
3x = 17-11
3x = 6 /:3
x = 6:3
x = 2
-12 + y = -25 /+12
y = -25+12
y = -13
2y - 3 = -16 /+3
2y = -16 + 3
2y = -13 /:2
y = [tex]-\frac{13}2[/tex]
y = [tex]-6\frac12[/tex]
