Answers

2014-02-27T23:19:34+01:00
2x+4y=10....*3 equ 1
3x+6y=15.....*2 equ 2
by elimination method
6x+12y=30 equ. 3
6x+12y=30 equ. 4
sub equ 1 from equ 2
12y-12y=30-30
y=0  equ 5

sub equ 5 into equ 1
2x+4(0)=10
2x+0=10
make x the subject of the formular
2x=10-0
2x=10
x=10/2
x=5
:. x=5 and y=0


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