im not really good at seventh grade math I need some help!!​

Answers:1/2a= 8 Multiply by 2/1 on both sides1/2(2/1)a= 8(2/1)Cross out 1/2 and 2/1 equals to aa= 164n= 32Divide by 4 for both sides4n/4= 32/4n= 83x= 36Divide by 3 for both sides3x/3= 36/3x= 12m/3= 2 Multiply by 3/1 for both sides3/1*m/3= 2(3/1)Cross out 3/1 and 3 becomes mm= 6 x-8= 12Move -8 to the other side. Sign changes from -8 to +8x-8+8= 12+8x= 2048= 3kDivide by 3 for both sides48/3= 3k/3k= 16 13/b= 0 Multiply by 1/13 for both sides.13/b( 1/13)= 0(1/13)b= 039= 13ydivide by 13 for both sides39/13= 13y/13y= 3