Question

1,2-(x-1/4)=1/2 СРОЧНО УРАВНЕНИЕ 30 БАЛЛОВ

Answer 1

$1.2 - (x - frac{1}{4} ) = frac{1}{2} \ \ 1.2 - x + frac{1}{4} = frac{1}{2} \ \ frac{12}{10} - x + frac{1}{4} = frac{1}{2} \ frac{12 times 2}{10 times 2} - x + frac{1 times 5}{4 times 5} = frac{1}{2} \ \ frac{24}{20} - x + frac{5}{20} = frac{1}{2} \ \ frac{29}{20} - x = frac{1}{2} \ \ - x = frac{1}{2} - frac{29}{20} \ \ - x = frac{1 times 10}{2 times 10} - frac{29}{20} \ - x = frac{10}{20} - frac{29}{20} \ \ - x = - frac{19}{20} \ x = frac{19}{20}$
ответ: х=19/20

Answer 2

помогла