3x+5y=8, 12x+20y=16 by substitute method.
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Step-by-step explanation:
3x+5y = 8
12+20y = 16 devide by 4
3x+5y = 4
by adding
3x+5y= 8
3x+5y = 4
_________
6x+ 10y= 12
devide by 2
3x+5y = 6
so the equation will have infinite value.
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