crosscountrydance crosscountrydance

02-06-2017
Mathematics

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What is the value of the x variable in the solution to the following system of equations?

4x − 3y = 3
5x − 4y = 3

Respuesta :

ghanami ghanami

02-06-2017

hello :
4x − 3y = 3 ...(1)
5x − 4y = 3 ...(2)
by (1) : 3y = 4x-3
y = (4/3)x -1 ...(*)
by (2) : 4y = 5x-3
y = (5/4)x -3/4 ... (**)
by (*) (**) ;
(4/3)x -1 =(5/4)x -3/4
(4/3)x-(5/4)x=1-3/4
(16x-15x)/12 =1/4 = 3/12
x=3

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