Question

2,16a-0,7a+1,04a=11,77​

Answer 1

2,16а-0,7а+1,04а=11,77

2,5а=11,77

а=11,77÷2,5

а=4,708

Answer 2

Ответ

1)2,16-0,7+1,04=2,5

2)11,77:2,5=4,708