Answer:
-7
Step-by-step explanation:
⅖ x (-7) x 5/2
0.4 x -7 x 2.5
-2.8 x 2.5
→ 2/5 × (-7) × 5/2
→ -14/5 × 5/2
→ -70/10 = -7
Hence, the answer is -7.
