solve Using subsitution , 3x+2y=9 , x+y=4 x=? y=?

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-slove using subsitution 0.3x-y=0

                                     y=2+0.25x
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1 Answer

line 1: 3x+2y =9

line 2: x+y=4, or y=4-x

3x +2(4-x)=9

3x -2x +8=9

x=9-8

x=1

x+y=4, so y=3
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