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9x - 4y= 19 4x + 4y= 20
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20 votes
9x - 4y= 19
4x + 4y= 20

User Non Communist Mao
by
8.5k points

1 Answer

5 votes

Answer:

x=3 and y=2

Explanation:

9x - 4y= 19

4x + 4y= 20

add both equations;

13x = 39

x= 3

using 4x + 4y= 20;

4(3) +4y=20

12+4y=20

4y= 20-12=8

y=8/4=2

User Alex Miller
by
6.7k points
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