Question

3.5x+2.2x=4.56
помогите решить.

Answer 1

3,5х+2,2х=4,56
5,7х=4,56
х=4,56:5,7
х=0,8

Answer 2

$3.5x+2.2x=4.56\5.7x=4.56\x=frac{4.56}{5.7}=0.8$