SOLUTION: in the system of equation 3x+5y=9, y=4-x what would be the resulting equation if 4-x is substituted to y in the first equation

Algebra ->  Matrices-and-determiminant -> SOLUTION: in the system of equation 3x+5y=9, y=4-x what would be the resulting equation if 4-x is substituted to y in the first equation      Log On