Question

$x - y = 26 \\ x = 3y$
by elimination method

Answer 1

x-y=26
x-3y=0

2y=26
y= 13


x= 26+13
x=39

Answer 2

x-y=26
x-3y=0

3x-3y=78
-x+3y=0
_________
2x=78
x=39


x-y=26
39-y=26
y=13

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