Question

What is the best method (system of equations) to find the solution of the following equation(s)?

a. 3x - 9y = 3
6x - 3y = -24

Answer 1

elimination

Answer 2

elimination method is good here
multiply first equation by -2 and add

Answer 3

substitution would be easy
divide first equation by 3
x-3y=1
x=3y+1
substitute this in second
6(3Y+1)-3y=-24
18y+6-3y=-24
15y=-30
y=-2
x=-2*3+1
x=-5
and y=-2

Answer 4

Why is elimiation the best method? (Short answer please )

Answer 5

it's faster

Answer 6

yea - i agree with that

Answer 7

get rid of x or y, solve for the one that's left, plug your answer into the other equation, solve for the other variable, you're done