1. ( 3,17+0,77:1,4)*3,5-4,216=

2. 4-6(х+2)=3-5х

3. (5х+8)-(8х+14)=9

 (5х+8)-(8х+14)=91. ( 3,17+0,77:1,4)*3,5-4,216=8.8041) 0,77:1,4= 0.55         3)3.72*3.5= 13.022)3.17+0.55= 3.72       4) 13.02-4.216=8.8042.4-6(х+2)=3-5х4-6х+12=3-5х-6х+5х=3-12-х=-9ответ:-х=-9 (5х+8)-(8х+14)=93.(5х+8)-(8х+14)=95х+8-8х-14=95х-8х=9-8+14-3х=15    /:(-3)х=-5Ответ:х=-5