Вычеслите наиболее удобным способом: 1)(4+1,8)+2,2; 2)1,6+(5+3,4); 3)(2,41+13)+4,59; решиииииииииите
1)
2)
3)
1) 4+1,8+2,2=4+4=8
2) 1,6+5+3,4=5+5=10
3) 2,41+13+4,59=13+7=20
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Answers & Comments
1)![(4+1,8)+2,2=4+1,8+2,2=4+(1,8+2,2)=4+4=8 (4+1,8)+2,2=4+1,8+2,2=4+(1,8+2,2)=4+4=8](https://tex.z-dn.net/?f=%284%2B1%2C8%29%2B2%2C2%3D4%2B1%2C8%2B2%2C2%3D4%2B%281%2C8%2B2%2C2%29%3D4%2B4%3D8)
2)![1,6+(5+3,4)=1,6+5+3,4=(1,6+3,4)+5=5+5=10 1,6+(5+3,4)=1,6+5+3,4=(1,6+3,4)+5=5+5=10](https://tex.z-dn.net/?f=1%2C6%2B%285%2B3%2C4%29%3D1%2C6%2B5%2B3%2C4%3D%281%2C6%2B3%2C4%29%2B5%3D5%2B5%3D10)
3)![(2,41+13)+4,59=2,41+13+4,59=(2,41+4,59)+13=7+13=20 (2,41+13)+4,59=2,41+13+4,59=(2,41+4,59)+13=7+13=20](https://tex.z-dn.net/?f=%282%2C41%2B13%29%2B4%2C59%3D2%2C41%2B13%2B4%2C59%3D%282%2C41%2B4%2C59%29%2B13%3D7%2B13%3D20)
Verified answer
1) 4+1,8+2,2=4+4=8
2) 1,6+5+3,4=5+5=10
3) 2,41+13+4,59=13+7=20