Respuesta :

delvismiguel27

Answer:

The standard form is Ax + By = C

with A being both positive and non-fraction

so we are given 3x - 9 = 7y

we add the 9 to both sides

3x = 7y + 9  

and subtract the 7y from both sides

3x - 7y = 9

Step-by-step explanation:

Otras preguntas