4x+5y=4.1
5x+4y=4
y=(4-5x)/4
4x+5*(4-5x)/4=4.1
16x+20-25x=16.4
9x=3.6
x=3.6/9
x=0.4
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4x+5y=4.1
5x+4y=4
y=(4-5x)/4
4x+5*(4-5x)/4=4.1
16x+20-25x=16.4
9x=3.6
x=3.6/9
x=0.4