Math, asked by 348856410, 2 months ago

If z + 4 = 3z and 3 – y = –7, what is the value of xy?

Answers

Answered by parikhyati2006

2

xy=20

Step-by-step explanation:

x+4=3x

4=3x-x

4=2x

x=4/2

x=2

3-y=-7

-y= -7-3

-y= -10

y= 10

xy=2×10

=20

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