Question

Use the elimination method to solve the system of equations.

a +9b=21
a +4b=6
Is there one solution (if so simplify your answer) infinite solutions or no solutions?

Answer 1

a= 21-9b
21-9b+4b=6

21-5b=6
-5b=-15
b=3

a= 21-9*3 = 21-27 = -6

Answer 2

please tell me i got this thing right

Answer 3

I don't know I am asking you for help LOL

Answer 4

that was directed @others

Answer 5

wait that is simulataneous equation right

Answer 6

the answer is correct,,i've calculate it^^

Answer 7

but i have to find an ordered pair.

Answer 8

(-6, 3)

Answer 9

Thank you for showing me the steps and helping me Agent.