How do you solve 2x+A=B given A=((2, -8), (9, 5), (-2, 3)) and B=((-6,2), (1, -5), (8, 5))?

1 Answer
Steve M
Nov 3, 2016

x = ((-4,5), (-4, -5), (6, 1))

Explanation:

2x+A=B => 2x + ((2, -8), (9, 5), (-2, 3)) = ((-6,2), (1, -5), (8, 5))
:. 2x = ((-6,2), (1, -5), (8, 5)) - ((2, -8), (9, 5), (-2, 3))
:. 2x = ((-6-2,2-(-8)), (1-9, -5-5), (8-(-2), 5-3))
:. 2x = ((-8,10), (-8, -10), (12, 2))
:. x = 1/2((-8,10), (-8, -10), (12, 2))
:. x = ((-4,5), (-4, -5), (6, 1))

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