SOLUTION: John is x years old, his sister Mary is 5X-12 years old. If Mary is two times John's age, write an equation in terms of x to find the age of John.
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Question 290047: John is x years old, his sister Mary is 5X-12 years old. If Mary is two times John's age, write an equation in terms of x to find the age of John.
Answer by JBarnum(2146) (Show Source): You can put this solution on YOUR website!
J=x
M=5x-12
M=2J
M=2x
2x=5x-12
_______
if u want it solved
12=3x
4=x
J=4
M=5(4)-12
M=8
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