Question

матеша уровнение пж​

Answer 1

y-4/9y=4,5;

9/9y-4/9y=4,5;

5/9y=4,5;

y= 4,5÷5/9;

y= 45/10×9/5;

y= 9/10×9;

y= 81/10;

y=8,1.