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X + 3y=9 x + y = 21 Solve it algebraically
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2 votes
X + 3y=9
x + y = 21
Solve it algebraically

User Aditya Sharma
by
7.6k points

1 Answer

10 votes

Answer:


x=27


y=-6

Explanation:

substitute in values


x=21-y


(21-y)+3y=9


21+2y=9


2y=-12


y=-6


x+(-6)=21


x=27

User Vibhesh Kaul
by
8.5k points
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