Question

5-2b=-7
-5-6b=-9

Answer 1

its elimination again... :(

Answer 2

Elimination??

Answer 3

Okay Let us do it then..

Answer 4

I think 'a' is missing there.. What do you think??

Answer 5

oops yup its
5a-2b=-7
-5a-6b=-9

Answer 6

Here, firstly you have to just add the two equations and you will see that a is getting eliminated.. Can you add the two equations there??

Answer 7

but the negative would it be
-2=-7? or no

Answer 8

So we would have

\(\large \space \space \space \space \space \space \space \cancel{5a} - 2b = -7 \\ + \large \cancel{-5a} - 6b = -9 \\ ---------\\ \large \space \space \space \space \space \space \space \space \space\space \space \space\space\space-8b = -16\)

Solving from that by dividing by 2...we get that \(\large b = 2\)