<span>1400 * 2650 = 3710000 м2 = 371 га</span>
Y=15/16-3/16
у=12/16
Проверка:
15/16-12/16=3/16.
<span>80 + (190 - 6 * 7) = ...
</span>1) 6 * 7 = 42
2) 190 - 42 = 148
3) 80 + 148 = 228
750 - (80 + 5 * 6) = ...
1) 5 * 6 = 30
2) 80 + 30 = 110
3) 750 - 110 = 640
378 - 609 : 3 - 9 = ...
1) 609 : 3 = 203
2) 378 - 203 = 175
3) 175 - 9 = 166
(84 + 76) : 4 * 7 = ...
1) 84 + 76 = 160
2) 160 : 4 = 40
3) 40 * 7 = 280
(74 - 4 - 14) : 3 * 8 = ...
1) 74 - 4 = 70
2) 70 - 14 = 56
3) 56 : 3 = 18,7
4) 18,7 * 8 = 149,6
90 * 4 : 3 - 116 = ...
1) 90 * 4 = 360
2) 360 : 3 = 120
3) 120 - 116 = 4
(90 - 54) : 9 = ...
1) 90 - 54 = 36
2) 36 : 9 = 4
458 + 309 = 767
80 * 5 - 246 = ...
1) 80 * 5 = 400
2) 400 - 246 = 154
(2+4)+8*9=78
9+(8-5)*7=30
(8-4)+7*9=67
93-7=86.............................................