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Y=-1,X+2y=9 solve by substitution show all work
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4 votes
Y=-1,X+2y=9 solve by substitution show all work

User Caesar Kabalan
by
6.7k points

1 Answer

4 votes

Answer:

x = 11

Explanation:

Substitute y = -1 into the equation.

x+2y = 9

; x+2(-1) = 9

x+(-2) = 9

x-2 = 9

x = 9+2

x = 11

User Steven Smethurst
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7.4k points
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