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Qual o numero que expressa o valor de m?
Na equação
x(m-3)+3x+4(m-5), sendo x = 2
Resolvi assim:
2(m-3)+3.2+4(m-5)
2m+4m-20
6m-20
m= 20/6
m= 10/3
Está correto?
Tentei tirar prova real substituindo o valor de m e não consegui.
Já procurei exercícios parecidos nos meus livros de matemática e só encontrei equações com duas incógnitas.
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