Julia wrote a linear equation in standard form as –6x – 3y = 10. arthur noticed that the equation was not written in standard form and wants to tell julia how to fix it. what advice should he give her? multiply both sides of the equation by –1, so that the value for a is positive. multiply both sides of the equation by 2, so that the values for a, b, and c have a greatest common factor other than 1. divide both sides of the equation by 3, so that the values for a, b, and c have a greatest common factor of 1. add 6x to both sides so that the value for a is 0.