Try not to get points only!?!? Then how about you pay me real money? 2c + 5(c - 5) = 10 The first step is distributive property. 2c + 5c - 25 = 10 The second step is to combine like terms, 7c = 35 The third step is to divide both sides by 7 c = 5.
Or you know, you could just take the easier way and plug in the numbers.