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Solve the system: y = 4x + 6 -5x - y = 21

Solve the system: y = 4x + 6 -5x - y = 21
48.4k views
5 votes
Solve the system:
y = 4x + 6
-5x - y = 21

User Silvo
by
8.4k points

1 Answer

6 votes
Substitute y in second equation
-5x-(4x+6)=21
-9x-6=21
9x+6=-21
9x=-27
X=-3
Solve for y:
Y=4(-3)+6
Y=-6
User Gopu
by
8.4k points
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