Simplify each expression. Justify each step. 1. (12 + 8x) + 13

2. (7-7) + 12

3. (5 x m) x 7

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.

At the county fair, the baxter family bought 6 hot dogs and 4 juice drinks for $12.90. the farley family bought 3 hot dogs and 4 juice drinks for $8.55. find the price of a hot dog and the price of a juice drink.

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²