Calcule o valor x na equação do 1° grau: 16x-21=x+9
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Answer:
Top option
Step-by-step explanation:
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Answer:
C.
Step-by-step explanation:
{5 = 10 - 5 ☑
{−20 = 1 - 21 ☑
This is what you will get when you plug these coordinates into the system of equations.
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Answer:
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