please show work

Question

what does 1.2p + 0.5 + 0.7p - 0.1 = ?

Answer 1

Combine like terms and simplify.

 

1.2p + 0.5 + 0.7p - 0.1 = (1.2p + 0.7p) + (0.5 - 0.1) = (1.2 + 0.7)p + 0.4 = 1.9p + 0.4