How do you solve #4x – 5y = 14# and #-12x + 15y = -42# using substitution?

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Answer 1 · 2018-05-06T22:49:50

we cannot solve by substitution

show below

#4x – 5y = 14# .......(1)

#-12x + 15y = -42#.......(2)

divide the equation 2 by -3

#4x-5y=14#....(2)

note (1) equal to (2)

so, we cannot solve by substitution