помогите) 1) 8ху+9х-9ху-7х= 2) 17.8х+9у-5.5х-10у=

Question

помогите) 1) 8ху+9х-9ху-7х= 2) 17.8х+9у-5.5х-10у=

Answer 1

8ху+9х-9ху-7х=-ху+2х
17.8х+9у-5.5х-10у=12,3х-у

Comments

8ху-9ху=-1ху=-ху

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9х-7х=2х

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-ху+2х

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17,8х-5,5х=12,3х

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9у-10у=-1у=-у

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12,3х-у

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а потом) 12.3х+(-у) да?

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да

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оу ну пасяб))

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пжс