## Elementary Algebra

$= 2b(0.18c - 0.29a)$
Looking at the variables, we have terms with both $ab$ and $bc$. We group like terms using parenthesis to make simplification easier. Then, we simply add or subtract the corresponding coefficients. Finally, we factor out $2b$. $0.24ab + 0.73bc - 0.82ab - 0.37bc$ $= (0.24ab - 0.82ab) + (0.73bc - 0.37bc)$ (Rewrite the order) $= -0.58ab + 0.36bc$ $= 0.36bc - 0.58ab$ (Factor out $2b$) $= 2b(0.18c - 0.29a)$