Question

Preciso urgente,pfv!!

Descubra o Valor de X :

a) 3/2X + 5/4X=11

b) 4/3X+ 2/9X=18
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Answer 1

a)

$\frac{3}{2x}+ \frac{5}{4x}=\frac{12x+10x}{8x^{2} }= \frac{22x}{8x^{2} } = \frac{11}{4x}=11=> 4x = \frac{11}{11} = 1 => x =\frac{1}{4}$

b)

$\frac{4}{3x}+\frac{2}{9x}= \frac{36x+6x}{27x^{2}} = \frac{42x}{27x^{2} }= \frac{14}{9x} = 18=>162x=14=>x=\frac{7}{81}$