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4 votes

f - 354 = 1221
A. f=877
B. f=1,565
C. f=867
D. f=1,575

User Rika
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1 Answer

6 votes


f-354=1221 add 354 to both sides


f+354-354=1221+354\\\\\boxed{f=1,575}\to\boxed{D.}

User Vyncent
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