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solve by substitution x - 3y= -15 x=-3

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substitution-method

asked Feb 11, 2014 in ALGEBRA 2 by skylar Apprentice

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1 Answer

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Given equation x-3y = -15

Substitute the value x = -3 in above equation.

-3-3y = -15

Add 3 to each side.

-3+3-3y = -15+3

-3y = -12

Divide to each side by negitive 3.

-3y/-3 = -12/-3

y = 4

answered Feb 12, 2014 by friend Mentor

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