231k views
1 vote
Sold a system of equations and choose the correct ordered pair. 3X plus 4Y equals 38 and 5X minus 5Y equals -30

User Jfarleyx
by
7.8k points

1 Answer

4 votes

Answer: X=2

Y=8

(2,8)

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

User AlexKhymenko
by
7.9k points