The unknown number is = 3/4
Let the unknown number be X
4(X) + 7 = 10
Minus 7 from the both sides:
4x +7 -7 = 10 -7
4x + 0 = 3
4x = 3
Make x the subject of formula by dividing both sides by 4,
4x/4 = 3/4
Therefore,
x= 3/4
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