Question

5x+y=0
5x+2y=30 Solve by elimination need help to make sure im right :D

Answer 1

using linear algebra or substitution?

Answer 2

y=30, right?

Answer 3

Use the elimination method

Answer 4

-5x-y = 0
5x + 2y = 30

y = 30
x=-6

Answer 5

y=30

by multiplying the 2nd eqn by -1 and adding the two eqns, you eleminate x

Answer 6

Thank you both Hero for quick answer and joojoo for explanation :D.