Solve the given system using elimination. 2r + 8s = -4
7r = -6s + 8
r = −2; s = −1
r = 1; s = 2
r = 2; s = −1
r = −1; s = 2

'..s=-1,:.r=2is your answer

2r + 8s = -41

7r = -6s + 8

7r+6s=8.. 2

multiplying equation 1 by 3 and equation 2 by 4

and subtracting equation 1 from equation 2

28r+24s=32

6r+24s=-12

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22r=32--12

22r=44

r=44/22=2

:.r=2

again multiplying equation 1 by 7 and equation 2_by 2

and subtracting equation 2 from 1

14r+56s=-28

14r+12s=16

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44s=-28-16

44s=-44

s=-44/44=-1

:.s=-1

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