What is the value of #3(2x-3y) -6y#, if #x = -7 and y = 4#?

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Answer 1 · 2017-12-08T06:47:05

#-102#

It is probably easier to simplify the expression before you substitute the given values.

#3(2x-3y)-6y#

#=6x-9y-6y#

#=6x-15y" "larr# ( now substitute for #x and y)#

#=6(-7)-15(4)#

#=-42-60#

#=-102#