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Solve the system of equations using the substitution method. { 4x+5y=7 y=3x+9 Please help?
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Solve the system of equations using the substitution method.

{
4x+5y=7
y=3x+9

Please help?

User Jesper Blaase
by
8.2k points

1 Answer

4 votes
4x+5(3x+9)=7
4x+15x+45=7
19x+45=7
19x=-38
x=-2
User Omni
by
6.6k points
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