If #3x + 5y = 4# and #8y + 6x = 36#, what is the value of #-y#?

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If #3x + 5y = 4# and #8y + 6x = 36#, what is the value of #-y#?

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Answer 1 · 2018-08-06T05:32:10

#-y=14#

Explanation:

#3x+5y=4#
#8y+6x=36#
#-y=?#
#3x+5y=4------------(1)#
#8y+6x=36------------(2)#
#(2)# can be simplified as
#3x+4y=18-----------(3)#
Subtracting (1) from (3)
#4y-5y=18-5#
#-y=14#

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If #3x + 5y = 4# and #8y + 6x = 36#, what is the value of #-y#?

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