Pls help 0nly 1-4 i will give brainliest

1) .82-.41 = 41 and 1.64 - 1.23 = .41 so that is equal.
2) 64 - 40 = 24 and 112-88= 24 si that’s equal.
Explain why it’s equal; u can say they are both equal because...
The rest can’t help with sorry.
I will give explanation tho.
For 3 do x + y = ?
Insert the numbers you see and then do the x to whatever the x was so 4x and the x means 9 so multiply
4) do the same thing I explained with number 3 but with different numbers

I hope this helps :)