Student Jen asks... Can you demonstrate how to solve this problem?

Question

How old am I if 400 reduced by two times my age is 244?

Answer 1

x = my age

400 reduced by twice my age is 244

400 - 2x = 244

400 - 2x = 244

-400 + 400 -2x = 244 - 400

-2x = -156

x = 78

Answer 2

How old am I if 400 reduced by two times my age is 244?

my age = x

reduced by means to subtract

two times my age means to multiply my age by 2

400 - 2x = 244

To solve, you need to get the variable alone.

Step 1: Subtract 400 from both sides of the equation.

400 - 2x = 244

-400 -400

-2x = -156

Step 2: Divide both sides of the equation by -2.

-2x = - 156

-2x -2x

x = 78

Answer 3

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