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tino4ka555 [31]
3 years ago
12

-3x -4y = 20 x - 10y =16 if (x, y) is the solution to the system of equations above what is the value of x?

Mathematics
1 answer:
balu736 [363]3 years ago
6 0
Multiply first equation by -5 and 2nd by 2, add them

15x+20y=-100
<u>2x-20y=32 +</u>
17x+0y=-68

17x=-68
divide both sides by 17
x=-4
 

the x value is -4
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