Question

preciso pra agoraaaa!!!!!!!​

Answer 1

Resposta:

$3x-4=O\\ \33(2)-4=O\\ 6-4=O\\\boxed{O=2}$

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$3x-4=\Del5\\ 3(\Delta)-4=5\\ 3\Delta-4=5\\ 3\Delta=5+4\\3\Delta=9\\ \Delta=9\div3\\\boxed{ \Delta=3}$

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$3x-4=\Box\\ 3(5)-4=\Box\\ 15-4=\Box\\ \\\boxed{ \Box=11}$

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$3x-4=20\\ 3(\Delta)-4=20\\ 3\Delta=20+4\\ 3\Delta=24\\ \Delta=24\div3\\ \\ \boxed{\Delta=8}$