How do you find the values of x and y given #[(2x, y, -y)]=[(-10, 3x, 15)]#?

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Answer 1 · 2017-03-29T19:51:55

Please see the explanation.

Given: #[(2x, y, -y)]=[(-10, 3x, 15)]#

Matching the first two elements of the two ordered triplicates:

#2x = -10#

#x = -5#

Matching the second two elements of the two ordered triplicates:

#y = 3x#

#y = 3(-5)#

# y = -15#

The does not conflict with the third two elements of the the two ordered triplicates:

#-y = 15#

#y = -15#