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  • 03-05-2017
  • Mathematics
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8x-9y=19 4x+y=-7 How Do I Do This Type Of Math

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mreijepatmat
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  • 03-05-2017
8x-9y=19
4x+y=-7
 Multiply all terms of the 2nd by (9)===>  36x + 9y= 63

add (36x  9y=  63) to the 1st ===> 44x+0y = -44 ===> x=-1
replace x by this value in any of the equation & you'll get y=-3
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