Math, asked by chouneema152, 1 day ago

From the sum of 4x −2y + 15 and − y − 21, subtract 7x − y − 9.

Answers

Answered by ratha1908

5

Step-by-step explanation:

4x-2y+15+(-y-21)

=4x-2y+15-y-21

=4x-3y-6

so

4x-3y-6-(7x-y-9)

=4x-3y-6-7x+y+9

= -3x-2y+3

=3-3x-2y

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