раскройте скобки и приведите подобные члены
а) 2,3 (2a-3b)-1.7 (7b-2a)
б)-1.8 (3.5-2x) + 3.1 (1.7-x)
в)6.6-2.8 (14.3m+3.7-2.8n)
г)-3.7+2.3 (-6.9c+1.4-3.7b)
д)x (3y-5z)-y (7x+3z)
а) 2,3 (2a-3b)-1.7 (7b-2a)
б)-1.8 (3.5-2x) + 3.1 (1.7-x)
в)6.6-2.8 (14.3m+3.7-2.8n)
г)-3.7+2.3 (-6.9c+1.4-3.7b)
д)x (3y-5z)-y (7x+3z)
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Verified answer
4,6а - 6,9b - 11,9b + 3,4a = 8a - 18,8a---------------- - ----------------------
-6,3 + 3,6x + 5,27 - 3,1x = 8,87 - 9,4x
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6,6 - 40,04m - 10,36 + 7,84n = 7,84n - 40,04m - 3,76
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3,7 - 15,87c + 3,22 - 8,51b = 6,92 - 15,87c - 8,51b
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3xy - 5xz - 7xy - 3yz = - 4xy - 5xz - 3yz