La solución del sistema de ecuaciones es (The solution for the system of equations is):
,
Step-by-step explanation:
La resolución del sistema de ecuaciones por el método de sustitución se presenta a continuación (The solving of the system of equations by substitution method is presented hereafter):
she has 17 slik roses already, and 6 friends give her 3 silk roses each, so that's 6 times 3, which makes 18, and 17 plus 18 is 35, so she has 35 silk roses in all.