Translate each mathematical expressions into algebraic expressions.

1. Thirteen decreased by a number a 2. Thrice the sum of x, y and z

3. 50 decreased by the product of cand d

4. Six times the number x, increased by 10

5. The product of 8 and n, increased by the product of q and r

6. A number x decreased by the product of 2 and p

7. Five less than twice a number y

8. The product of m and 10 added to one

9. Twice a number q more than 5

10. Four multiplied by the difference of x and y