n - 7 = -1
Add 7 to each side: n = -1 + 7
n = 6
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5.
Five less than seven and two tenths is calculated by subtracting five from 7.2. This gives us 7.2 - 5 = 2.2. Therefore, the number that is five less than seven and two tenths is 2.2.
It is: 19-7 = 12
7+2
If seven less than half of the number is 35 then 7 plus 35 must be half of the number. 7 + 35 = 42 and if that is half the number the whole number must be 42 x 2, which is 84.