SOLUTION: Please help me solve Separate 84 into two parts such that one part will be 20 less than 3 times the other. Find the numbers. Thank you

Question 923513: Please help me solve
Separate 84 into two parts such that one part will be 20 less than 3 times the other. Find the numbers.
Thank you
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x + y = 84
x = 3y - 20
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put the system of linear equations into standard form
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x + y = 84
x - 3y = -20
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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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answer:
x = 58
y = 26
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now by solve substitution:
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x + y = 84
x = 3y - 20
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3y - 20 + y = 84
4y = 104
y = 104/4
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answer:
y = 26
x = 58
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