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X+y=7 3x+y=15 solve by substitution method​
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1 vote
X+y=7
3x+y=15
solve by substitution method​

User EricBellDesigns
by
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1 Answer

4 votes

Explanation:

x =7-y

subs x in eqn 2

3(7-y)+y=15

21-3y+y=15

21-2y=15

21-15=2y

6=2y

y=6/2

y=3

User Charchit Agarwal
by
5.0k points
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