Asked by Gloria

Betty is 6 years older than Deb. 13 years ago, Betty was 4 times older than Deb. How old is Deb?

Answers

Answered by PsyDAG
D + 6 = B

4(D-13) = B-13

Substitute D+6 for B in second equation and solve for D. Insert that value into the first equation and solve for B. Check by inserting both values into the second equation.
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