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Anonymous
Break it down, solve 3*4 first, then multiply that by 7.
3*4=12 12*7=84
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4
okay if x-4=3 then x=7 bcause 4+3=x = 4+3=7 and 7-4=3!
you can muit by 4s and 8s.
441 = 3 x 3 x 7 x 7
-2 x -4 x -7 x -8 = 448