Question

solve this system of equation using the elimination method.

Question attached

Answer 1

workin on it

Answer 2

You could multiply the top equation by 4 and the bottom one by 18.

Answer 3

Then subtract one equation from the other. That will eliminate x.

Answer 4

as cliffsedge said multiply the bottom by 18 to get :

3x - 2y = 5
12x + 9y = -14

since you need substitution :

3x = 5 + 2y
x = (5 + 2y)/3

plug it into the second :

12(5+2y)/3 +9y = -14
20 + 8y +9y = -14
17y = -34
y = -2

then :

x = (5-4)/3 = 1/3

Answer 5

oh you need elimination :\

Answer 6

as cliffsedge said multiply the bottom by 18 to get :

3x - 2y = 5
12x + 9y = -14

multiply the first by 4
and get :

12x - 8y = 20
12x + 9y = -14

now subtract the second from the first :

-17y = 34

y= -2

etc