Asked by Haylie

x+y=20
x=y-4
Please help me solve each system of equations and show your work thanks

Answers

Answered by Reiny
use substitution, sub the 2nd into the 1st

x+y = 20
(y-4) + y = 20
2y = 24
y = 12
back into x = y-4
x = 12-4 = 8

x = 8, y = 12
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