Question

3|7-a|=12

Answer 1

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Answer 2

|7-a|=4

Answer 3

Let's ignore the absolute sign for now
7-a=4
for what value of a, can we can 4 or -4(remember absolute value)
a=3 and 10

Answer 4

7-3=4
|4|=4
7-10=-4
|-4|=4