74м в = 1480
17 см в = 32 кв
6000 = 600 кв
5600 = 11 200 д кв
<span>3001+(748+999)=(3001+999)+748=4000+748=4748
</span><span>(8375+96)-275=(8375-275)+96=8100+96=8196</span>
1) 9\с+5\с = 14\с
2) а\с+4\с = (а+4)\с
3) а\с+b\3c = (3a+b)\3c
4) 1\c+3\2c = 5\2c
5) d\ac+ c\ad = (d²+c²) \ acd
6) 2a\3c +a\6c = 5a\6c
1\3x+1\x = 4\15
4\3x = 4\15
x = 4\15*3\4
x = 1\5
1\x+1\7x = 2\7
8\7x = 2\7
x = 2\7*7\8
x = 1\4