Mathematics
Andy17
10

7x - 2y = 4 5y + 3x = 10

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(1) Answers
Genna57

7x-2y=4 3x+5y=10 so we can eliminate eliminate y's 2 times 5=10 multiply first by 5 and 2nd by 2 and add 35x-10y=20 6x+10y=20 + 41x+0y=40 41x=40 divide both sides by 41 x=40/41 sub back 7x-2y=4 solve for y first to make it easier -2y=4-7x y=(7/2)x-2 y=(7/2)(40/41)-2 y=(280/82)-2 y=140/41-2 y=140/41-82/41 y=58/41 (x,y) (40/41,58/41)

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