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

2. 4-6 (х+2) = 3-5 х

3. (5 х+8) - (8 х+14) = 9

(5 х+8) - (8 х+14) = 9 1. (3,17+0,77:1,4) * 3,5-4,216=8.804

1) 0,77:1,4 = 0.55 3) 3.72*3.5 = 13.02

2) 3.17+0.55 = 3.72 4) 13.02-4.216=8.804

2. 4-6 (х+2) = 3-5 х

4-6 х+12=3-5 х

-6 х+5 х=3-12

-х=-9

ответ:-х=-9 (5 х+8) - (8 х+14) = 9

3. (5 х+8) - (8 х+14) = 9

5 х+8-8 х-14=9

5 х-8 х=9-8+14

-3 х=15 / : (-3)

х=-5

Ответ: х=-5