Question

0.4x-3/1.5x+9=-7/5 check the solutions
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Answer 1

Step-by-step explanation:

2x-15=-10.5x-63

2x-15+10.5x+63=0

12.5x+58=0

x=-58/12.5

Answer 2

Answer:

x = - 3.84

Step-by-step explanation:

$\frac{0.4x-3}{1.5x+9}$ = - $\frac{7}{5}$

First, define domain:

1.5x + 9 ≠ 0 ⇒ x ≠ - 6 or x∈ (- ∞ , - 6)∪(- 6, ∞ )

Use cross multiplication

7(1.5x + 9) = 5(3 - 0.4x)

10.5x + 63 = 15 - 2x

12.5x = - 48

x = - 3.84