solve these 4 problems in Tableau form and Excel

please solve the following in Tableau form and also in Excel:

Problem 1-  Z= x1+x2+2x3            S.T

x1+x2+x3 <=12

2x1+x2+5x3=20

x1+x2+x3>=8

Problem 2-           x1=denim   x2= pound     Z=2.25x1 +3.1 x2      S.T

3.2x2 +3x1 <=3000

7.5 x2 +5x1<= 6500

x2>=510

x1>=0

problem 3:      x1= blocks  x2= radio x3= toster  Z=8x1+10x2+7x3    S.T

 7x1+10x2+5x3<=2000

2x1+3x2+x3<=600

problem 4:    a=lamp  b=sport  c= linen

MAX Z=130x1 a +150x1 b+90x1 c +275x2 a+300x2 b+ 100x2 b+ 180 x3 a+ 225x3 b+140x3 c+ 200 x4 a+ 120x4b+160x4 c            S.T

x1a +x1 b+ x1c=1

x2a + x2b+x2c=1

x3a+x3b+x3c=1

x4a+x4b+x4c=1

1<=b<=2

1<=c<=1

xij>=0

a=x1a+x2a+x3a+x4a

b=x1b+x2b+x3b+x4b

c=x1c+x2c+x3c+x4c