Multiple numerical bases

Find the value of x for which 312four+52x=96ten . Hint: four, x, and ten are the base of the given number.

Correct answer:

x =  8

Step-by-step explanation:

3124 = 3 42+1 4+2 = 5410 52x = 5 x+2 9610 = 9 10+6=96   3124 + 52x = 9610  54+(5 x+2)=96  5x=40  x=540=8  x=8

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