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Solve by elimination

Solve by elimination-example-1
User Jodyann
by
4.7k points

2 Answers

7 votes

Answer:

Are you trying to find the value of x or y, or both :)

Explanation:

I hope this helps, if it doesn't then just message me and ill be more than happy to help :)

User Ahmed Elashker
by
4.3k points
1 vote
Answer(assuming we solve x):
1st Equation: x= -3/2y-3
2nd Equation: x=-(10y+18)/7

Step by Step Explanation:
1st Equation: since "solve" usually means to find x unless told to solve for another variable, we are going to isolate x in both equations

-24-8x=12y (add 24 to both sides)
+24 +24

-8x=12y+24 (isolate 8 from x)
/-8 /-8


x=-3/2y-3 [simplify fractions (-12/8 turns to -3/2)]

2nd Equation:
1+10/18y=-7/18x

1+10/18y=-7/18x (convert 5/9 to 10/18 to divide)

1+10/18y=-7/18x (isolate -7/18 from x)
/-7/18 /-7/18

(to make this easier on ourselves)
-(10y+18)/7=x
OR
-18/7-10/7y=x

here's the work i did...
Solve by elimination-example-1
User Ouriel Ohayon
by
4.4k points