Answer:
-4.5
Explanation:
step 1
remove brackets
-9.12 - 6.4f = -1.92 - 4.8f
step 2
collect like terms
-9.12 + 1.92 = -4.8f + 6.4f
-7.2 = 1.6f
step 3
divide both sides by 1.6
-7.2/1.6 = 1.6f/1.6
f = -4.5
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