SOLUTION: steve is 4 years older than rose. In 5 years from now, the sum of their ages will be equal to twice the sum of their ages from 5 years ago. what is steve's present age

Question 924626: steve is 4 years older than rose. In 5 years from now, the sum of their ages will be equal to twice the sum of their ages from 5 years ago. what is steve's present age
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = steve's age now
y = rose's age now
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x = y + 4
(x + 5) + (y + 5) = 2((x - 5) + (y - 5))
x + 5 + y + 5 = 2(x - 5 + y - 5)
x + 5 + y + 5 = 2x - 10 + 2y - 10
x + y + 10 = 2x + 2y - 20
x + y = 30
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x = y + 4
x + y = 30
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put the system of linear equations into standard form
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x - y = 4
x + y = 30
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = steve's age now = 17
y = rose's age now = 13
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Solve and graph linear equations:
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Solve quadratic equations, quadratic formula:
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Solve systems of linear equations up to 6-equations 6-variables:
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