<span>1)2,48x + 3.52x = 1. 26
6х=1.26
х=1.26:6
х=0.21
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</span><span>2)4. 63x + 3. 37x = 1. 92
8х=1.92
х=1.92:8
х=0.24
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10 факториал деленое на 2 (повтор) = 50
1.(9/14-5/21):2,5/6=(9/14•3)-(5/21•2):2,5/6•8=(27/42-10/42):2,40/42=1,10/40
2.(180:240)•100%=75%
3. -3(b+4)-5(2-3b)=-3b-12-10+15b=12b-22
1) 50+180=180+20+30=230
2) 46-27=46-20-6-1=19
3) 56:4=14
4) 40*5=4*5*10=200