3 years ago

Sarah's age is five less than twice her sister's age. Sarah is fifteen years old.

Mathematics

2 answers:

natka813 [3]3 years ago

8 0

The first one would be correct

saul85 [17]3 years ago

3 0

Let her sisters age be x.
=>sister .....x

Sarah.
twice x=2x. then less than 5
=> (2x-5 )
if Sarah = 15 years
by substation, 2x-5=15

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