Question

use substitution method
1/2x+1/2y=-1
1/3x-1/2y=-4 what is the solution set?
i get -6,4 is this correct?

Answer 1

Yes, you are correct.

Answer 2

thanks

Answer 3

You're welcome. :)

Answer 4

2a+4b=-24
a=20-2b i need step by step help i think

I have it set up like this 2(20-2b)+4b=-24
40-4b+4b=-24
40-0b=-24
add 40 to both sides -0 divided by 16 so b has no solution

Answer 5

2(20-2b) + 4b = -24
40 - 4b + 4b = -24
40 = -24

So yes, you are correct. b has no solution.

Answer 6

thanks once again :)