Hey!
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Steps To Solve:
0.3f + 1 = 0.2f - 4.5
~Subtract 0.2f to both sides
0.3f + 1 - 0.2f = 0.2f - 4.5 - 0.2f
~Simplify
0.1f + 1 = -4.5
~Subtract 1 to both sides
0.1f + 1 - 1 = -4.5 - 1
~Simplify
0.1f = -5.5
~Divide 0.1 to both sides
0.1f/0.1 = -5.5/0.1
~Simplify
f = -55
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Answer:

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Hope This Helped! Good Luck!