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antaliaaoy8gi7
@antaliaaoy8gi7
July 2022
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-4*(-0.8x+2y)-(4.2x-y), если x=2 y=-1
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llkutyall
-4*(-0,8*2+2*(-1))-(4.2*2+1)=-4*(-1,6-2)-9,4=-4*(-3.6)-9,4=14,4-9,4=3
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Джелантино
-4*(-0,8x+2y)-(4,2x-y)=3,2x-8y-4,2x+y=-x-7y
x=2 y=-1
-2-7*(-1)=-2+7=5
Ответ: 5
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Answers & Comments
x=2 y=-1
-2-7*(-1)=-2+7=5
Ответ: 5