Asked by tink
how do you work out 5x-2y=4
3x+y=9
3x+y=9
Answers
Answered by
Reiny
by "work out" do you mean solve ?
double the second and add to the first
5x-2y=4
6x+2y=18
11x = 22
x = 2
sub into original 2nd
3(2) + y = 9
y = 9-6
y = 3
double the second and add to the first
5x-2y=4
6x+2y=18
11x = 22
x = 2
sub into original 2nd
3(2) + y = 9
y = 9-6
y = 3
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