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How do you solve the following system: # 8x - y = 13 , 5x+y=-7 #?

1 Answer

Apr 29, 2018

Solution: # x=6/13, y = -9 4/13#

Explanation:

#8 x- y = 13 (1) ; 5 x+ y = -7 (2)# Adding equations (1) and (2)

we get #13 x = 6 :. x = 6/13# Putting # x= 6/13# in equation (1)

we get , # 8*6/13- y = 13 or y= 48/13-13 or y = (48-169)/13# or

#y= -121/13 = -9 4/13#

Solution: # x=6/13, y = -9 4/13# [Ans]

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