Помогите хотябы начать (4.2 + 2x) : 3> 1.5x - 1

1.5x-1" alt="(4.2+2x):3>1.5x-1" align="absmiddle" class="latex-formula"> |*3>0

4.5x-3" alt="4.2+2x>4.5x-3" align="absmiddle" class="latex-formula">

-3-4.2" alt="2x-4.5x>-3-4.2" align="absmiddle" class="latex-formula">

-7.2" alt="-2.5>-7.2" align="absmiddle" class="latex-formula">
$x<-7.2:(-2.5)$
$x<2.88$
x є $(-\infty;2.88)$
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1.5x-1" alt="4.2+\frac{2x}{3}>1.5x-1" align="absmiddle" class="latex-formula"> |*3

4.5x-3" alt="12.6+2x>4.5x-3" align="absmiddle" class="latex-formula">

-3-12.6" alt="2x-4.5x>-3-12.6" align="absmiddle" class="latex-formula">

-15.6" alt="-2.5x>-15.6" align="absmiddle" class="latex-formula">
$x<-15.6:(-2.5)$
$x<6.24$