приведите подобные члены -4,2a+8b+3,8a-2b+16=? 1/7a+2/7b-1/5b+2/5a=? 5x-20+8x-24=? 6x-8y+7,2x-2,4+0,6y=? 6,2a-6,2+7,4b-7,4=?
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