September 2021 0 10 Report
20 баллов за правильное решение. Найдите корень уравнения:

1) 0,9х - 0,6(х-3)÷2 (0,2х-1,3)
2) -0,4 (3х-1)+8 (0,8х-0,3)=5-(3,8х+4)
3) дробь 4/7(0,56-4,2у)+0,4= 5/13 (0,52-6,5у)
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