1.

Please solve C) part

Answer»

ANSWER:

X = - 3.84

Step-by-step EXPLANATION:

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

By CROSS MULTIPLICATION, we have

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

or \: 2.0x - 15 = - 10.5x - 63

or \: 2.0x + 10.5x = 15 - 63

or \: 12.5x = - 48

or \: x = - \frac{48}{12.5} = - \frac{480}{125}

x = - \frac{96}{25} = - 3.84


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