3у2 -20 = 160 — 2у²
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Step-by-step explanation:
3y² - 20 = 160 - 2y²
3y² + 2y² = 160 + 20
5y² = 180
y² = 180/5
y² = 36
y² = 6²
y = 6
i hope it helps you
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