Mark M. answered 09/13/19
Tutor
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Mathematics Teacher - NCLB Highly Qualified
A represents Ade's age
2A represents Sunny's age
A - 4 represents Ade's age four years ago
2A - 4 represents Sunny's age four years ago
2A - 4 = 4(A - 4)
2A - 4 = 4A -16
12 = 2A
6 = A
Can you complete and answer?