a pet store currently has a total of 45 cats and dogs . there are 7 more cats than dogs find the number of cats and dogs in the store
x = dogs
x + 7 = cats
dogs + cats = 45
x + ( x + 7) = 45
2x + 7 = 45 subtract 7 from both sides
2x = 38 divide both sides by 2
x = 19 = dogs x + 7 = 19 + 7 = 26 = cats
