2x+3y=1 −2x+3y=−7

Caelan

Caelan

Answered question

2020-12-03

2x+3y=1
−2x+3y=−7

Answer & Explanation

odgovoreh

odgovoreh

Skilled2020-12-04Added 107 answers

The equations have opposite coefficients for the xx-terms so add the two equations to eliminate x. Then solve for y:
2x+3y=1
-2x+3y=-7
6y=-6
y=-1
Substitute y=−1 into either equation and solve for x:
2x+3y=1
2x+3(−1)=1
2x−3=1
2x=4
x=2
The solution of the system is then (x,y)=(2,−1). ​ ​
Jeffrey Jordon

Jeffrey Jordon

Expert2021-08-12Added 2605 answers

Answer is given below (on video)

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