Answer:
s = 3
Step-by-step explanation:
2 sides measure 18 so
42- 18 - 18 = 6
2 sides = s
so 2s = 6
divide both sides by 2 and taaadaaa
3
18+18 = 36. 42-36 = 6. 6 / 2 = 3
We need to see the "given system".
i need points im really sorry
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