пж помагите))))))))))))...

December 2021 1 7 Report

пж помагите))))))))))))

Answers & Comments

Ketsyo

Verified answer

а)
$\frac{4x - 32}{12} = \frac{4}{5}
$
$\frac{4x - 32}{12} - \frac{4}{5} = 0
$
$20x - 160 - 48 = 0$
$20x = 208$
$x = 10,4$

б)
$\frac{6x + 3}{27} = \frac{5}{9}$
$\frac{6x + 3}{27} - \frac{5}{9} = 0$
$6x + 3 - 15 = 0$
$6x = 12$
$x = 2$

в)
$\frac{4x - 24}{60} = \frac{4}{15}$
$\frac{4x - 24}{60} - \frac{4}{15} = 0$
$4x - 24 - 16 = 0$
$4x = 40$
$x = 10$

г)
$\frac{3}{4} = \frac{7x + 9}{40} 
$
$\frac{3}{4} - \frac{7x + 9}{40} = 0$
$30 - (7x + 9) = 0$
$30 - 7x - 9 = 0
$
$-7x = -30 + 9
$
$-7x = -21$
$x = 3$

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