1. 5(5х+3х)-10=8
25x+15x-10=8
25x+15x=8+10
40x=18
x=18/40
x=0.45
2. 4(7+х)-3х=7
28+4x-3x=7
x=7-28
x=-21
3. 7(-5+3х)+4х=9
-35+21x+4x=9
25x=9+35
25x=44
x=44/25
x=1.76
1. 25х+15х-10=8
25х+15х=8+10
40х=18
х=9/20
2. 28+4х-3х=7
4х-3х=7-28
х=-21
3.-35+21х+4х=9
21х+4х=9+35
25х=44
х=44/25
х=1 19/25
