Question

In the correctly worked addition problem below, each X represents the same digit. What is the value of X?

X(1)
X(5)
X(7)
X(9)
+ ------
182

A. 3
B. 4
C. 5
D. 6
E. 7
well,1+5+7+9 = 22
so the last digit is the desired 2, and you have to carry the 2
so 4x+2 = 18
Can you figure x now?

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