Step-by-step explanation:1x-5y=10 13x-7y=2 ---------- The addition method is the elimination method. ... the better and the simplest way is to multiply first equation by 7 and the second equation by 5. ... You will get then an equation for "y" only, and you should solve it to get y. ...
The GCF is based upon what integer divides evenly into two numbers; the LCM is based upon what integer two numbers share in a list of multiples. The GCF must be a prime number; the LCM must be a composite number.
