Start with

Add 2x to both sides:

Subtract 21 from both sides:

Divide both sides by 5. Since it is positive, we don't have to change the inequality sign:

So, the answer is 
Answer:
(-6,5)
Step-by-step explanation:
Answer:
2 2/3 as an improper fraction is 8/3
8/3 × 1/4 = 2/3
Answer:
75 Degrees
Step-by-step explanation:
Answer:
25000
Step-by-step explanation:
25 * 1000 = 25000