harleeGirl
08.11.2019 •
Mathematics
How old am i if 400 reduced by 2 times my age is 244? how do you solve it and what is the answer?
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Ответ:
My age is 78 years.
Explanation:
Define my age first as a variable.
Let my age be
x
years.
Reduced by means subtracted.
Subtract twice my age from 400 to get 244:
400
−
2
x
=
244
400
−
244
=
2
x
←
make x positive and isolate it.
156
=
2
x
78
=
x
Ответ: