skratzer1221 skratzer1221

26-12-2019
Mathematics

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Sold a system of equations and choose the correct ordered pair. 3X plus 4Y equals 38 and 5X minus 5Y equals -30

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Stefanisaska Stefanisaska

27-12-2019

Answer: X=2

Y=8

(2,8)

Step-by-step explanation:

3x+4y=38

5x-5y=-30

==============

3x+4y=38

y-x=6

==============

y=6+x

3x+4(6+x)=38

==============

y=6+x

3x+24+4x=38

==============

y=6+x

7x=14

x=2

y=2+6

y=8

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