6
2b
minus 4 plus 9 = 5, so 5x
13+-12--5 = 6
Same as subtracting 6 from 7 = K
6
6
2b
7(3y-2)-(-4y+9)
11p+11
minus 4 plus 9 = 5, so 5x
7g-10h
That will depend on the plus or minus value of 4y in order to simplify the given expression
13+-12--5 = 6
Same as subtracting 6 from 7 = K
To put a plus or minus sign with the digit 5
All that you can do is to simplify the left hand side of the "equation" to the expression 2x + 6y + 1. Since the right hand side of the original "equation" is not given, it is, in fact an expression and cannot be solved. In any case, one linear equation in two variables cannot be solved.