Question

помогите решитьУравнение 4 х+23/5,4 = 8,5/20, 5/6 = 3 х+1,5/9; 5/12 = 3/1,3 х+2; 1,4/2 х+1 = 4,6/23; 15/27 = 9/8 х+4,2; 5 х-0,8/16 = 3,4/17.

Answer 1

1)20*(4х+23)=5,4*8,5
4х+3=45,9:20=2,295
4х=2,295-3=-0,705
х=-0,705:4
х=-0,17625
2)6*(3х+1,5)=5*19
3х+1,5=95/6=15 5/6
3х=16 5/6-1 1/2=16 5/6-1 3/6=15 2/6 =15 1/3
х=15 1/3 : 3=46/3*1/3=46/9
х=5 1/9
3)5*(1,3х+2)=12*3
1,3х+2=36/5=7,2
1,3х=7,2-2=5,2
х=5,2:1,3
х=4
4)4,6*(2х+1)=1,4*23
2х+1=1,4*23/4,6=7
2х=7-1=6
х=3
5)15*(8х+4,2)=27*9
8х+4,2=27*9/15=81/5=16,2
8х=16,2-4,2=12
х=12/8
х=1,5
6)17*(5х-0,8)=16*3,4
5х-0,8=16*3,4/17=3,2
5х=3,2+0,8=4
х=4/5=0,8