i am edditing my post because i got the answer wrong
+ 19 on both sides, -19 becomes 0, 1 becomes 20 x=20
Answer:
14
Step-by-step explanation:
1. Do the "Two Mark" Rule
- 7 + (+12) - 5
2. Do your addition before subtracting
- 7 + 12 = 19
3. Subtract your remaining two numbers
- 19 - 5 = 14