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spin [16.1K]
3 years ago
9

If 2x + a=b solve for x.

Mathematics
1 answer:
Vitek1552 [10]3 years ago
3 0

2x + a = b   Subtract a from both sides

2x = b - a   Divide both sides by 2

x = \frac{b - a}{2}

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QveST [7]
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y represnta o numero das suas respostas erradas.
O total de perguntas <span>é 25, portanto
x + y = 25

Agora tratamos do dinheiro.
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Temos um sistema de duas equações com duas variaveis.

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y = 14

Resposta: Errou 14 perguntas.


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