Solve the simultaneous equations: [tex]4y + 3x = 12 [/tex] and [tex]y = 2x - 4[/tex]

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09-10-2016
Mathematics

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Solve the simultaneous equations: [tex]4y + 3x = 12 [/tex] and [tex]y = 2x - 4[/tex]

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SazBaz1999 SazBaz1999 · Answer 1 · 2016-10-09T14:15:43+02:00

SazBaz1999 SazBaz1999

09-10-2016

Put equation two into the first equation by replacing values of y with 2x-4

4(2x-4)+3x=12
8x-16+3x=12
11x=28
x=28/11

Put the value of x into the original equation to find the value of y.

y=2(28/11)-4
y=56/11-4
y=12/11

x=28/11 and y=12/11

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