If you had an equation like 7x+4 + 3x +2 you would separate like terms like this. 7x+3x + 4+2 add these together to get 10x + 6 to get your answer.
1 The Important Thing About Fractions Written by: M. Carlson, K. Frink, C. Castro, S. Pratt and T. Punkiewiez.