Respuesta:
7x-12=30
7x- 12-(30)=0
7x-42=0
7x=42
x=42/7
x=6
x = 6
Explicación paso a paso:
7x - 12 = 30
7x = 30 + 12
7x = 42
x = 42/7
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Respuesta:
7x-12=30
7x- 12-(30)=0
7x-42=0
7x=42
x=42/7
x=6
Respuesta:
x = 6
Explicación paso a paso:
7x - 12 = 30
7x = 30 + 12
7x = 42
x = 42/7
x = 6