are you seriously that dumb
Look, first off, a quick tip to solve subtraction sums (let's start with +A-B=C) where the subtrahend is larger than the minuend (B>A) is to swap their positions (+B-A=-1C), do the sum, and then reverse the difference (+A-B=C).
Like...what if you wanted to work out 3-8? You swap their positions so you try to work out 8-3, and no worries, it's 5. Then you just reverse 5 and make -5, and poof! 3-8=-5! You know the difference between 3 and 8 is like 5. So if the larger number is the minuend (B), you know the difference is gonna be negative.
Also, what about an addition where the first addend is negative (-A+B=C)? No worries again. If it helps just swap them completely over (+B-A=C). Poof, subtraction is no different to addition except that it has negative numbers. Or if the positive addend isn't enough to make the sum not negative (-A+B<0), just go and swap all their roles (+A-B=-1C). Then go and reverse the sum.
Like -11+7 is... well, +11-7=4 so -11+7=-4.
Also remember, +- is -, -+ is - and -- is +. Basically if the operators are different it's minus and if they're the same it's plus. Like 5--7=12 and 9-+3=6. It's also the case when multiplying any two numbers: 4×-6=-24 and -5×-7=35.
Finally, remember your plus tables. Also, have you ever worked out 4+8×5=60 and been told WRONG??? We don't just straight-up go left to right anymore! You use the PEMDAS method. So do all the multiplying and dividing first left to right and THEN do the addition and subtractions. So, 4+8×5 is apparently 44. Anyway.
It's literally easier than squeezing one lemon...(well maybe it's just because I have dermatitis and minimal access to lemons)
seriously how did you not get the hang of it yet