# SOLUTION: 1. 4a+5[1-3(2a-1)]=2(2a+5)

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 Click here to see ALL problems on Systems-of-equations Question 16553: 1. 4a+5[1-3(2a-1)]=2(2a+5)Answer by smik(40)   (Show Source): You can put this solution on YOUR website!Hmm... nasty looking problem. First of all we should foil everything out. So, 4a+5*(1-3*(2a-1)) gives us: 4a+5-30a+15, which simplified gives us: 20-26a Now, let's foil the other side, 2(2a+5), gives us: 4a+10 So, we've got: 20-26a = 4a+10 Now we should isolate the variable. So we can add 26a to each side, and subtract 10 from each side, to get: 10=30a Now we solve for a by dividing both sides by 30 to get: a = 0.3