<span> (−6)∙(a+2b−3c−4d)−(−2)∙(−4a−3b+2c+d) this will give us: -6(a+2b-3c-4d)+2(-4a-3b+2c+d) opening the parenthesis we get: -6a-12b+18c+24d-8a-6b+4c+2d putting like terms together we get -6a-8a-12b-6b+18c+4c+24d+2d simplifying the above we get -14a-18b+22c+26d the answer is : </span>-14a-18b+22c+26d<span>
