240 + (118 - 80) = 278
1) 118 2) 240
- 80 + 38
38 278
3358 + (412 - 299) = 3461
1) 412 2) 3358
- 299 + 1 1 3
1 1 3 3461
4980 - 137.6 + 125631 - (683 - 185) = 129975.04
1) 683 2) 4980,0 3) 125631.00 4) 130473.04
- 185 - 137,6 + 4842,04 498.00
498 4842.4 130473.04 129975.04
240 + (118 - 80) = 278
1) 118 2) 240
- 80 + 38
38 278
3358 + (412 - 299) = 3461
1) 412 2) 3358
- 299 + 1 1 3
1 1 3 3461
4980 - 137.6 + 125631 - (683 - 185) = 129975.04
1) 683 2) 4980,0 3) 125631.00 4) 130473.04
- 185 - 137,6 + 4842,04 498.00
498 4842.4 130473.04 129975.04
b-a=a+1 / b=2a+1
c-(b+a)=b+a+1 / c=6a+3
d-(c+b+a)=c+b+a+1 / d=18a+9
a+b+c+d=40
a+2a+1+6a+3+18a+9=40
27a+13=40
27a=40-13
a=1
b=2a+1=3
c=6a+3=9
d=18a+9=27