Question 296844
I don't see an equal sign. Do you see an equal sign? No equal sign-no equation.
3a - 2{3a-2[1-4(a)-4(-1)]+5}
3a - 2{3a -2[1 -4a +4] +5} ok up to here
3a - 2{3a -2 +8a -8]+5 this is wrong
3a -6a +4 -16a +16 +5
-19a +25   (the book says -19a + 10)
I don't understand where did I go wrong?

My solution
3a - 2{3a-2[1-4(a)-4(-1)]+5}
3a - 2{3a -2[1 -4a +4] +5}
3a-2{3a-2[5-4a]+5}
3a-2{3a-10+8a+5}
3a-2{11a-5}
3a-22a+10
-19a+10