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16 May, 09:27

Ronelyse is 4 years older than Preston. The sum of their ages is 10. Create a system of equations to solve for their ages

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  1. 16 May, 09:53
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    In the system, y will represent Ronelyse's age while x will represent Preston's age.

    Y=X+4

    X+Y=10

    If you were solving this system, you'd use substitution and it would look like this:

    X + (X+4) = 10.

    The second step would be to get rid of the four by subtracting it from both sides of the equation which would then make it look like this: 2x=6 (I just combined like terms for x)

    The third step is to divide both sides by two to get rid of the two. After this step we could find that x=3.

    Our fourth step is to put this into our first equation of the system which would make it y=3+4. Then we'd know that y=7

    So, Ronelyse (the y) is 7 and Preston (the x) is 3
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