11014515 11014515

24-11-2022
Mathematics

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If $2x-y=7,$ what is the value of $7-8x+4y$?

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Medunno13 Medunno13

24-11-2022

Answer:

[tex]7-8x+4y=-21[/tex]

Step-by-step explanation:

[tex]2x-y=7 \implies 8x-4y=28 \\ \\ \implies 7-8x+4y=7-28=-21[/tex]

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