use 2345 and sum signs like+ - x and divided by write equations with answers less then 20?

Answer 1

2+3+4+5 = 14
2+3+4 - 5 = 4
2+ 3 - 4 + 5 = 6
2 +3 - 4 - 5 = -4
2 - 3 +4+5 = 8
2 - 3 - 4 +5 = 0
2 - 3 +4 - 5 = -2
2 - 3 -4 -5 = -10
-2 -3 -4 -5 = -14

Answer 2

(2*4) - (3+5)=0
4*3/2 - 5 =1
4*3 -(2*5)=2
5-2=3
5+3-4=4
2+3=5
2+4=6
3+4=7
etc...

Answer 3

2+3+4+5=14, 2+3+4-5=4, 2+3+5-4=6, 2+4+5-3=8, 3+4+5-2=10, 2*3*4-5=19, 2*5+4+3=17, 2*4+3+5=16, ((5*4)/2)+3=13, ((5*4)/2)-3=7, ((4*3)/2)+5=11, ((4*3)/2)-5=1 (2+5)-(3+4)=0, (3+5)-(2+4)=2, (4+5)-(2+3)=3 etc.