Question

Решите уровнение:
(3/4х-2/5)×3/4=3/4

Answer 1

(3/4х-2/5)×3/4=3/4
3/4х-2/5=3/4:3/4
3/4х-2/5=1
3/4х=1+2/5
3/4х=1 2/5
х=1 2/5:3/4
х=7/5*4/3
х=28/15
х=1 13/15

Answer 2

домножаем на 4 получаем
(0.75х-0.4)×3=3 |÷3
0.75х-0.4=1
0.75х=1.4
х=1.4÷0.75
х=
$frac{14}{10 } div frac{3}{4} = frac{14 times 4}{10 times 3} = frac{56}{30} = frac{28}{15} = 1frac{13}{15}$