Question

(X:8-4)*7=35 280:(12-X)-16=3

Answer 1

x:8-4=35:7
x:8-4=5
x:8=5+4
x:8=9
x=9*8
x=72
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280:(12-x)=3+16
280:(12-x)=19
12-x=280:19
12-x=14 14/19
-x=14 14/19-12
x=-2 14/19