Let n represent the number. You require
7n - 2n = 55
5n = 55 . . . . . . collect terms
n = 11 . . . . . . . divide by 5
The number is 11.
106=x+x+5+x+8
106=3x+13
3x=93
x=31
(the sides are 31, 36, 39 respectively)
Answer:
The answer is
.
Step-by-step explanation:
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Answer:

Step-by-step explanation:
3--2/-6-1=
3+2/-7
5/-7