Question

solve:- 0.4z-3/1.5z+9=7/5​

Answer 1

Answer:

Now, (0.4z - 3)/(1.5z + 9) = 7/5

⇒ 5 (0.4z - 3) = 7 (1.5z + 9)

⇒ (5 × 0.4)z - (5 × 3) = (7 × 1.5)z + (7 × 9)

⇒ 2z - 15 = 10.5z + 63

⇒ 10.5z - 2z = - 15 - 63

⇒ 8.5z = - 78

⇒ z = - 156/17

Step-by-step explanation:

Answer 2

Answer:

0.4−1⋅31.5⋅+9=75

0.4z-1 \cdot \frac{3}{1.5} \cdot z+9=\frac{7}{5}