Respuesta :
gems aged in = a
gems age in 9 years = a + 9
‘a’ represents the current age of the gem, so by adding 9 to this number, it creates the equation
gems age in 9 years = a + 9
gems age in 9 years = a + 9
‘a’ represents the current age of the gem, so by adding 9 to this number, it creates the equation
gems age in 9 years = a + 9