(-1/6+2/3)/(-7/12)*3等于多少

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(-1/6+2/3)/(-7/12)*3等于多少(-1/6+2/3)/(-7/12)*3等于多少(-1/6+2/3)/(-7/12)*3等于多少=(-1/6*3+2/3*3)/(-7/12)=(-1/

(-1/6+2/3)/(-7/12)*3等于多少
(-1/6+2/3)/(-7/12)*3等于多少

(-1/6+2/3)/(-7/12)*3等于多少
=(-1/6*3+2/3*3)/(-7/12)
=(-1/2+2)*(-12/7)
=3/2*(-12/7)
=-18/7

(-1/6+2/3)/(-7/12)*3
=(-1/6+4/6)/(-7/4)
=1/2*(-4/7)
= -2/7