Solve for A, B, C
A=2
B=0
C=7
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A=-B+2
Solve A+B=2 for A.
-B+2+C=9
Substitute -B+2 for A in the equation A+C=9.
B=7-C C=B+7
Solve the second equation for B and the third equation for C.
C=7-C+7
Substitute 7-C for B in the equation C=B+7.
C=7
Solve C=7-C+7 for C.
B=7-7
Substitute 7 for C in the equation B=7-C.
B=0
Calculate B from B=7-7.
A=-0+2
Substitute 0 for B in the equation A=-B+2.
A=2
Calculate A from A=-0+2.
A=2 B=0 C=7
The system is now solved.
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