Solve the simultaneous equations 4x-2y=8 AND x-3y= -3 SHOW ALL WORKINGS PLS

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29-07-2016
Mathematics

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Solve the simultaneous equations 4x-2y=8 AND x-3y= -3 SHOW ALL WORKINGS PLS

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Ckaranja Ckaranja · Answer 1 · 2016-07-29T19:51:22+02:00

Ckaranja Ckaranja

29-07-2016

4x-2y=8
x-3y=-3
Multiply equation 2 by 4;
4x-2y=8
4x-12y=-12
Subtracting equation II from equation I;
10y=20
y=2
Replacing the value of y in equation;
4x-2y=8
4x-2(2)=8
4x-4=8
4x=12
x=3

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