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# Linear Systems (Substitution)

1. 1
Solve by substitution. $$y=-x+4$$ $$y=x-2$$
2. 2
Solve by substitution. $$2x-y=6$$ $$x+3y=3$$
3. 3
Solve by substitution. $$x-4y=6$$ $$x-2y=-4$$
4. 4
Solve by substitution. $$x=3$$ $$3x-2y=11$$
5. 5
Solve by substitution. $$x-y=1$$ $$3x-2y=1$$
6. 6
Solve by substitution. $$2m-3n=-9$$ $$m+n=-2$$
7. 7
Solve by substitution. $$3x-y=4$$ $$x-2y=3$$
8. 8
Solve by substitution. $$m+n=-3$$ $$3(m+1)-2(n-1)=-4$$
9. 9
Solve by substitution. $$5(x+y)=55$$ $$19-5x=y$$
10. 10
Solve by substitution. $$x+y=5$$ $$3x+3y=10$$ good test question!
11. 11
Solve by substitution. $$4x+12y=8$$ $$x+3y=2$$ good test question!

$$e=mc^2$$