Question

решить уравнение 72 / 80 - x - 12/80 равно 15/80 ​

Answer 1

Ответ:

$x = dfrac{9}{16} = 0.5625$

Решение:

$displaystyle frac{72}{80} - x -frac{12}{80} = frac{15}{80} \\\bigg(frac{72}{80} - frac{12}{80}bigg) - x = frac{15}{80} \\\frac{60}{80} - x = frac{15}{80} \\\x = frac{60}{80} - frac{15}{80} \\\x=frac{45}{80} \\\x = frac{9}{16} \\\x=0.5625$