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Twice Jack's age plus 5 is 21. Write and solve an equation. How old is Jack?

Solution

Twice Jack's age plus 5 is 21. Write and solve an equation. How old is Jack?

Solution

Jack^{'} s age is : 8

Solution steps

Translate the problem into an equation:

2 x + 5 = 21

Solve for

x, 2 x + 5 = 21 : x = 8

Jack^{'} s age is : 8

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