Question

What number is 7 units to the left of -1? 6 -6 -8 8

Answer 1

When you go left on a number line, you are going to go to further into the negatives.

<--- Negative or Positive --->

-10_-9_-8_-7_-6_-5_-4_-3_-2_-1_0_1_2_3_

Since you want to go 7 units to the left, The answer would be -8. You should recount on the number line just to double check.

Answer 2

When you say left, you must mean on a number line, so -1 - 7 is equal to -8, so -8 is 7 units to the left (On a number line) of -1.
Your answer is -8.
Hope this helped!