Question

the difference between a number and seven is less than or equal to -3 find the possible numbersn≤4 n≥4n≤-10n≥-10

Answer 1

the difference between a number (n) and seven is equivalent to: n - 7

Then, the difference between a number and seven is less than or equal to -3 is equivalent to:

n - 7 ≤ -3

n - 7 + 7 ≤ -3 + 7 adding 7 at both sides

n ≤ 4