<span>(74 109-t)+3367=70 258
74 109-t=70 258-3 367
74 109-t=66 891
t=74 109-66 891
t=7 218
</span>
<span><span>(74 109-7218)+3 367=70 258</span>
66 891+3 367=70 258
70 258=70 258
</span>
<span>(490-x)-250=70
490-x = 70+250
-x = 320-490
-x = -170
x = 170
5a+500 = 4500:5
5a = 900-500
5a = 400
a = 80
a+156 =17*20
a = 340-156
a = 184
(1604-y)-108 = 800
1604-y = 800+108
-y = 908-1604
-y = </span>-696
y = 696
140-(a+25) = 40
a+25 = 140-40
a = 100-25
a = 75
340+(190-x) = 400
190-x = 400-340
-x = 60-190
-x = -130
x = 130
100-(x+25) = 52
x+25 = 100-52
x = 48-25
x = 23
(11676+34567)-x = 11245
-x = 11245-46243
-x = -34998
x = 34998
0,8 = 8/10 = 4/5 - сократили на 2
4/5 - 5/9 = 36/45 - 25/45 = 11/45
0,48 = 48/100 = 12/25 - сократили на 4
12/25 + 3/8 = 96/200 + 75/200 = 171/200
65/100 = 13/20 - сократили на 5
9 17/36 - 6 13/20 = 9 85/180 - 6 117/180 = 8 265/180 - 6 117/180 = 2 148/180 = 2 целых 37/45
875/1000 = 7/8 - сократили на 125
4 7/8 - 2 5/23 = 4 161/184 - 2 40/184 = 2 целых 121/184
Другому слагаемому . Уменьшаемому
1) 9*35=315
2) 315-243=72(м2)
Ответ:72 м2