Question

Help me pls and ty !

Answer 1

`a=2.6-3.4b`

Explanation:

So we have the equation:

`2.2a+3.4b=1.2a+2.6`

And we want to solve for a.

So, subtract 1.2a from both sides:

`(2.2a+3.4b)-1.2a=(1.2a+2.6)-1.2a\\1a+3.4b=2.6`

Now, subtract 3.4b from both sides:

`(a+3.4b)-3.4b=2.6-3.4b\\a=2.6-3.4b`

And that's our answer :)