Question 195714
{{{3(-4b)-2(a-b-c)}}} Start with the given expression.



{{{3(-4b)-2(a)-2(-b)-2(-c)}}} Distribute



{{{-12b-2a+2b+2c}}} Multiply



{{{-2a-10b+2c}}} Combine like terms.



So {{{3(-4b)-2(a-b-c)=-2a-10b+2c}}}