Verified Answer :

  1. Subtract 5.7 from both sides to get the variable on one side. (f=2)
    8. Subtract 5.52 from both sides to get the variable on one side. (f=5)
    9. Add 3.77 to both sides so the variable will be on one side. 
    10. Add 10.58 to both sides.
    11. Divide by 2.2 on both sides. 2.2b/2.2 will leave you with the variable b. 8.8/2.2=4; b=4.
    12. Divide by 2.5b on both sides. 2.5b/2.5 leaves b. 10/2.5= 4; b=4.
DeannaJ

7) minus 5.7 from both sides to get
f=1

8) minus 5.52 from both sides to get
f=5

9) add 3.77 to both sides to get
f=11.1

10) add 10.58 to both sides to get
f= 21

11) divide both sides by 2.2 to get
b=4

12) divide both sides by 2.5 to get
b=4

hope this helps!

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