The factor pairs of 20 are (20,1)(10,2)(5,4)
None of them add up to 8.
10 and -2 add up to 8 if your target product was -20.
12
0.4 x 20 = 8
2/5 + 3/4 - 1/2 equals 8/20 + 15/20 - 10/20 which adds up to 8/20 This equals 4/5
-223
10x3+8=80-60+? 30+8=20+? 38=20+? 38-20=? 18=? The answer is 18.
-12
20
12
-29
0.4 x 20 = 8
-20
-10
-8 x 20
20 = 400
-28
2/5 + 3/4 - 1/2 equals 8/20 + 15/20 - 10/20 which adds up to 8/20 This equals 4/5
8 X 11