А)567+7843=8410
2415+7843=10258
б)88942-44761=44181
88942-17942=71000
в)(830+243)-674=399
(1712+805)-674=1843
1) 47 + 58 - 98 = 7 , (47 + 58 ) - 98 = 7
Z-35-64=16
z-35=64+16
z-35=80
z=80+35
z=115
проверка 115-35-64=16 16=16
<span>6 - 2х - (2 - 5х) : 3 = (6х - 4) : 5
</span>((6 - 2х) * 3 - (2 + 5х)) : 3 = (6х-4) : 5
(18 - 6х - 2 + 5х) : 3 = (6х-4) : 5
(16 - х) : 3 = (6х - 4) : 5
(16 - х) * 5/15 = (6х-4) * 3/15
80 - 5х = 18х - 12
23х = 92
х = 4
Надеюсь, что помог Вам
1) <span>3 2/7 = 23/7
5 7/11 = 62/11
2 11/36 = 83/36
2) </span><span>4 1/3 - 4/3
5 7/15 - 22/15
3 8/45 = 53/45
3) 5 = 40/8
12 = 96/8
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