Question 15
Linear and Simultaneous EquationsIf 8x − 4 = 6x − 10, find the value of 5x.
- A.−35
- B.−15
- C.−3
- D.3
- E.7
Show the answer and explanation
Answer: B (−15)
Explanation
8x − 6x = −10 + 4, so 2x = −6 and x = −3. Then 5x = −15.
If 8x − 4 = 6x − 10, find the value of 5x.
Answer: B (−15)
8x − 6x = −10 + 4, so 2x = −6 and x = −3. Then 5x = −15.