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17-02-2019
Mathematics

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Solve these simultaneous equations to find x and y.
Solve
4x+y=52
2x-y=20

Solve these simultaneous equations to find x and y Solve 4xy52 2xy20 class=

Respuesta :

17-02-2019

simply add the two equations to find x:

4x+y=52

+

2x-y=20

____________

6x=72 => x=72/6=12

the put x in one of the equations to find y:

4(12)+y=52 => y=52-48=4

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