-7x + y = -19 -2x + 3y = -19 solve for x and y using elimination

asked Nov 21, 2022 97.2k views

19 votes

-7x + y = -19

-2x + 3y = -19

solve for x and y using elimination

3.1k points

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2 votes

Answer:

x = 2, y = -5

Explanation:

-7x + y = - 19 --> -21x + 3y = -57

$\left \{ {{-21x+3y=-57} \atop {-2x+3y=-19}} \right.$

subtract

$-19x = -38\\x= 2$

substitute

$-2*2 + 3y = -19\\-4 + 3y = -19\\3y = -15\\y = -5$

Sameet answered Nov 28, 2022

3.2k points

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