СРОЧНО ПРИВЕДИТЕ ПОДОБНЫЕ СЛАГАЕМЫЕ 1)-2,5a+1,8a+1,5a. 2)3,2b-4,3b-3,2b. 3)1/2c+1/3c+1/6c. 4)1,9d-4,2d+3,1d. 5)7,2a-5a-1,3a. 6)1/3b+1/5b-2/15b.
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