9) Solve e/4 - 10 = - 20 (CHECK on your graph paper.)

10) Solve 0.4k - 4 + 1.6k = 14 (CHECK on your graph paper.)

9) e=-40 10) k=9

Step-by-step explanation:

9) e/4-10=-20 add 10 on both sides

e/4=-10 Multiply everything by 4

e=-40

10) 0.4k-4+1.6k=14 combine like terms

2k-4=14 Add 4 on both sides

2k=18 divide both sides by 2

k=9