3n-5=-8(6+5n) First distribute -8 to 6 and 5n 3n-5= -48-40n Move variables using opposite operations ,n-terms should be on the left 43n-5=-48 43n=-43 43n/43=-43/43 n=-1 -(1+7x)-6(-7-x)=36 There isan invisible -1 in front of the first parenthesis. We know it's here because of the negative sign before the first parenthesis. Distribute -1 to (1+7x) and -6 to (-7-x). -1-7x+42+x+=36 Now combine x-terms with x-terms and regular numbers with regular numbers. This is called combining like terms. 42-6x=36 Move 42 by substracting 42 from 42 and from 36 -6x=-6 Divide -6x by -6 and -6 by -6 x=1
-3(4x+3)+4(6x+1)=43 Distribute -3 to (4x+3) and -4 to (6x+1) -12x-9+24x+4=43 Combine like terms(explained above) 24x-5=43 Add 5 to -5 and to 43 24x=48 Divide 24x And 48 by 24 x=2