Answer:
x = 31
Explanation:
For the sum of the saved amounts to be 286, we must have ...
(5x +4) +(4x +3) = 286
9x = 279 . . . . . . . . . . . . . subtract 7
x = 31 . . . . . . . . . . . . divide by 9
The value of x would be 31.
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