First you write out your equation, which is 28x-42=154. Then you solve you equation. First, add 42 to each side, get 28x=196. Divide both sides by 28, get x=7.
Step-by-step explanation:
One's digit of N can be 2 or 7.
Answer:

Step-by-step explanation:
1) Subtract 1 from both sides.

2) Simplify 7 - 1 to 6.

<u>Therefor, the answer is </u><u>a > 6</u>.