September 2021 1 8 Report
раскройте скобки приведите подобные слагаемые:
1) (3х+у)-(-х-4у)
2) (х+6у)-(8х-7у)
3) (м+н)-(м-н)
4) (м+3)-(6м+5)-(м-1)
5) (х-у)+(х-у)-(2х+у)
6)(0,2х-3)-(х-2)-(0,4-1)
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