SOLUTION: please show me how to solve by substitution 3x=-7 x+y=-9 I am not sure what to substtiute.

SOLUTION: please show me how to solve by substitution 3x=-7 x+y=-9 I am not sure what to substtiute.

Algebra.Com

Question 60823: please show me how to solve by substitution 3x=-7
x+y=-9 I am not sure what to substtiute.

Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
3X=-7
X=-7/3 NOW SUBSTITUTE -7/3 FOR X WE GET
-7/3+Y=-9
Y=-8+7/3
Y=(-24+7)/3
Y=-17/3

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