Write an expression for a number 7 is subtracted from the sum of X and 4
please guys make it fast.
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You don’t need equations to solve this. You don’t need algorithms, or an x and a y.
Logically one of the numbers has to be between 5 and 7, making it a 6.
The other number has to express the difference with 5 or 7. Either way will result in a 1.
Just check the number line:
0——5–7—-
Two numbers add to 7. Could be anything, as long as both are smaller than 7, right? Wrong. 3 and 4 can never subtract to 5. One of them therefor has to be larger than 5. Only 6 is possible.
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