SOLUTION: [ Use substitution to solve the system of equations
2x-3y=21
y=3-x ]
Algebra.Com
Question 818588: [ Use substitution to solve the system of equations
2x-3y=21
y=3-x ]
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
2x - 3y = 21
y = 3 - x
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2x - 3y = 21
2x - 3(3 - x) = 21
2x - 9 + 3x = 21
5x = 30
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answer:
x = 6
y = -3
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