## Algebra 1: Common Core (15th Edition)

To solve 2x + 3y = 12 (-3x +y = -7 )$\times$ -3 2x + 3y = 12 9x -3y = 21 --> add the two equations 11x = 12+21 11x = 33 x = 3 To solve for y 2(3)+3y = 12 6 + 3y = 12 3y = 12-6 3y = 6 y = 2