Find the age now

​Four years ago, Ellie was 12 years old. How old is Ellie now? Verify the answer.

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x = Ellie's age now
x - 4 = Ellie's age 4 years ago

x - 4 = 12   {four years ago, she was 12 years old}
x = 16   {added 4 to each side}

Ellie is 16 now

Verification
age 4 years ago + 4 = age now
12 + 4 = 16
​
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