To use six sevens to equal 4, you can perform the following mathematical operation: (7/7) + (7/7) + (7/7) - (7/7) - (7/7) - (7/7) = 4. This equation breaks down each seven into a fraction of 1, which when added and subtracted accordingly, results in the desired outcome of 4.
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(7+7)/7 + (7+7)/7 = 4
The above answer is wrong it gives the answer fourteen
One solution would be (7x7)-(7+7+7) divided by 7
7x7=49. 7+7+7=21. Therefore 49-21=28, and 28/7
You've used all the numbers.