Math, asked by saarashamaa, 2 months ago

Subtract the sum of 3y + 7z and 7y - 2z from 10y + 12z .

Answers

Answered by Mysteryboy01

3

$SUM :$

$\\$

$= 3y + 7z + 7y - 2z \\ \\ = 3y + 7y + 7z - 2z \\ \\ = 10y + 5z$

$10y + 5 \: z \: \: from \: \: 10y + 12z \\ \\ = 10y + 12z - 10y + 5z \\ \\ = 10y - 10y + 12z - 5z \\ \\ = 7z$

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