(b+2)4=60 (2x-1)9=36 1/3(2x-3)= 4 1/6x 2/3(9-12x)=1/5 (10x-4) хотя бы которые можете

1)(b+2)4=60 
4b+8=60
4b=52
b=13
2)(2x-1)9=36
18x-9=36
18x=45
x=2.5
3)1/3(2x-3)= 4 1/6x
2/3x - 1=4 1/6x
-1=3 1/2x
x= -3 1/2
4)2/3(9-12x)=1/5 (10x-4)
6-8x=2x-0.8
-10x=-6.8
x=0.68