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lina2011 [118]
3 years ago
14

Substitution or Elimination.

Mathematics
1 answer:
zimovet [89]3 years ago
5 0
It's a simultaneous equation ^^; So basically I first look at the number in front of the Y values (if they aren't the same you have to multiply each equation by the other number in front of Y in the second line and vice versa but anyways) you add the two equations if they are the same so: -3x+2y=23 + 5x+2y = -17 which should give you 2x=40 then divide by two to get x put your x answer back into the top or bottom equation (your call ^^;) and then work out what must be the Y value! I really hope this helps! ^^; 
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You did not add an image, although the answer is as follows:

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