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I need help figuring this out, I tried to simplify 3 times

this are fractions, I can't express fractions in here..
(-7/4) x (-4/7) = -7/4 x 12/35
1 times x = 84/140
I am having trouble simplifying
I got so far 42/70, 21/35 and are wrong
please help

  • Math -

    I figured it out muself =)

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