I got -3.........................
-7 - 7p = 3p + 23
Move the -7p over to the right....by adding
-7 = 10p +23
Move the 23 over to the left by subtracting
-30 = 10p
divide by 10
p = -3
I'd say 1, 3 , and 4 (and triangle 2 looks similar to those 3)
1\2+3\7=
7\14+6\14=13\14
1-13\14=1\14
I am a size 12 in women and I wear a size 26 in men but I still have a little room. You should try a size 22 maybe?