Раскрой скобки и приведите подобные слагаемые:
1)8(6x-7)-17x
2)9y-5(17-y)
3)0,6(4x-3)+2,1(x-5)
4)2,5(4a-8b)-(3a-4b)*1,4
5)-(-5,2-3,1c)-(2,4c-6,4)
6)9/16(5 1/3x-2/3y)-7/20(2 6/7x-5 5/7y)
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