Larry C. answered 12/21/18
Tutor
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Computer Science and Mathematics professional
A+B=12795
C+D=17245
A=C
D=6B
By substitutions, the 2nd equation becomes A+6B=17245 Therefore:
A+B+5B=17245
12795+5B=17245
5B=4450
Solve for B and then you can derive A,C and D