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Lord459658
@Lord459658
August 2022
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чему равно значение выражения
-0,8х-(0,6х-0,7у) если 2х-у=-8?
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Ksano4ka
2x-y=-8
y=2x+8
-0.8x-(0.6x-0.7(2x+8)=-0.8x-(0.6x-1.4x-5.6)=1.6 x+5.6=0
x=3.5
y=7+8=15
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Answers & Comments
y=2x+8
-0.8x-(0.6x-0.7(2x+8)=-0.8x-(0.6x-1.4x-5.6)=1.6 x+5.6=0
x=3.5
y=7+8=15