Answer:
3
Step-by-step explanation:
2 -3 = -1 + 4 = 3
If the formula is a+b-c then you need to substitute the letters with the numbers. For this equation the formula would be:
(1+3-4) + (2+5-6)
(4-4) + (7-6)
0 + 1
=1
The answer would be 1
Answer: whats the answer
Step-by-step explanation: