Try another version of this question
Solve for `a`,
`a+c=(b-a)/(-2)`
`a=`
`a+c=(b-a)/(-2)`
`a=`
Get help:
Box 1: Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c
Be sure your variables match those in the question
`(b+2*c)/(-2+1)`