that's not how it works tho bc in order for that to be the case, the equation would have to look like this:
(20+20)×(10×0)+2+2 and that would equal 4
Bc in the original equation, once you solve 10×0, there's no multiplication symbol left in the equation. It's just replaced with 0, and you're basically subtracting 0 from 40. But in this new equation, I replaced the minus before (10×0) with another multiplication symbol, meaning that now whatever number comes before it will be multiplied by whatever 10x0 is. (It’s important to remember to put parentheses on 10x0 tho because if you don’t then left to right takes priority and the equation will be 20x10=200 and then times 0. [Now since 20x10 and 10x0 would both be multiplication equations, that wouldn’t matter here, but it would if you were to use any operation with the smae level of priority, say, division.])
Also you’d have to put parentheses on 20+20 because if you didn’t, the multiplication again takes priority over the addition and you get 20 + (20x10x0) + 2 + 2, which would equal 24. so putting parentheses on 20+20 makes sure you get 40 x 0. Then you are at 0, and then 2 + 2 equals 4. So that’s how the equation would have to look if it were to equal 4. One fundamental aspect of operations is to know how to get to several different answers with the same numbers in the equation.
Now if that was confusing at all, this is basically the rules:
- All equations are done from left to right, but there are exceptions to this rule and these are the exceptions:
- Multiplication and division override addition and subtraction (i.e. 2 + 5 x 6 would equal 32 instead of 42 because 5x6 must be solved before 2+5, same with 5 - 6 ÷ 2, that would equal 2 instead of -0.5 because 6÷2 must be solved before 5-6).
- Exponents override multiplication and division (i.e., 2x5² would be 2x(5x5) = 2x25 = 50, instead of (2x5)x(2x5) = 10x10 = 100, or 10÷2² would equal 10÷4 = 2.5 instead of solving (10÷2) and then multiplying it by itself, (5x5=25).
- Parentheses override everything. So (2 + 5)x 6 would be 42 instead of 32 and (5-6)÷2 would be -0.5 instead of 2 because the parentheses are solved first even over multiplication and division. They also override exponents. (2x5)² would be 10² because whatever is in the parentheses must be solved first.
I hope this helped :)