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15 votes
15 votes
Solve the system of equations 2x+7y=-5 and-x-6y=10

User Geof
by
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1 Answer

11 votes
11 votes

Answer:

x=8 and y= -3

Explanation:

2x + 7y= -5. eqn 1 ×6

-x -6y = 10. eqn 2 ×7

12x + 42y = -30

+

-7x - 42y = 70

= 5x= 40

x= 8

to find y

substitute x into eqn 2

-8-6y=10

-6y=10+8

-6y=18

therefore 6=-3

User Aaron Chen
by
3.3k points