Level 265 Level 267
Level 266

Solving Systems of Equations by Substitution


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x+y=28
x+(6x)=28
2x+y=15
2x+(3x)=15
3x+y=30
3x+(5x)=30
2y+x=17
2y+(y+2)=17
x+2y=-21
x+2(3x)=-21
3m-2n=20
3(4n)-2n=20
4m+3n=38
4m+3(15-m)=38