Hướng dẫn trả lời:
d) `17/2 - |2x - 1/5| = 25/4`
`→ |2x - 1/5| = 17/2 - 25/4`
`→ |2x - 1/5| = 34/4 - 25/4`
`→ |2x - 1/5| = 9/4`
`→ 2x - 1/5 = 9/4` hoặc `2x - 1/5 = -9/4`
- Trường hợp 1: `2x - 1/5 = 9/4`
`→ 2x = 9/4 + 1/5`
`→ 2x = 45/20 + 4/20`
`→ 2x = 49/20`
`→ x = 49/20 ÷ 2`
`→ x = 49/20cdot1/2`
`→ x = 49/40`
- Trường hợp 2:
`2x - 1/5 = -9/4`
`→ 2x = -9/4 + 1/5`
`→ 2x = -45/20 + 4/20`
`→ 2x = -41/20`
`→ x = -41/20 ÷ 2`
`→ x = -41/20cdot1/2`
`→ x = -41/40`
Vậy `x = 49/40` hoặc `x = -41/40`