3. Решите уравнение: 0,144 : (3,4 – икс) = 2,4. решите пж. Created by Kamo22. matematika-ru

3. Решите уравнение: 0,144 : (3,4 – икс) = 2,4. решите пж...

KhArLaMoV4602 3,4•2,4-2,4х=0,144 ;
8,16-0,144=2,4х ;
2,4х=8,016 ;
х=3,34

mikavaselkova 0,144:(3,4-x)=2,4
18/125:(17/5-x)=2,4
$\frac{18}{125}*\frac{5}{17-5x}=2,4$
$\frac{18}{25}*\frac{1}{17-5x}=2,4$
$\frac{18}{25(17-5x}=2,4$
18=60(17-5x)
18=1020-300x
300x=1020-18
300x=1002
x=167/50=3целых 17/50=3,34

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