Question

найдите корень уравнения x+5/3=9-7 x+2/5

Answer 1

х+5/3=9-7х+2/5
х+7х=9+2/5-5/3
8х=9+2/5-5/3
8х=9.6/15-25/15
8х=8.21/15-1.10/15
8х=7.11/15
х=7.11/15:8
х=116/15*1/8
х=116/120=29/30
ПРоверка
29/30+5/3=9-7*29/30+2/5
79/30=9-203/30+2/5
2.19/30=8.30/30-6.23/30+12/30
2.19/30=2.7/30+12/30
2.19/30=2.19/30

Answer 2

x+5/3=9-7 x+2/5  /*15
15x+25=135-105x+6
15x+105x=141-25
120x=116
x=116/120
x=29/30