Answer:
-11
Step-by-step explanation:
-5 minus 6 equals -11. Look up on Google
Step-by-step explanation:
Given

Answer:
7n-6=-20
Step-by-step explanation:
six less than seven times a number
we'll use n as "the number"
six less meaning -6
7 times a number n = 7n
7n-6=-20
P= a+b+c = 76
side a = 2b = 30
side b = b = 15
side c = 2b + 1 = 31
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