5x + 3y = 7 ;3x-4y =21
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Answer:
(5x+3y= 7)*4
(3x-4y=21)*3
20x+12y=28
9x-12y=63
29x= 91
x=3.13
5*3.13+3y=7
3y=7-15.65
y=2.88
hope it will help you
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