Resolva a expressão fracionaria
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{[3*(-3/4)^(-2)+6*(3/4)^(-1)-4]/[7*(-3/4)^(-1)+2]}^(-1)
{[3*(16/9)+6*(4/3)-4]/[7*(4/3)+2]}^(-1)
{[16/3+8-4]/[28/3+2]}^(-1)
{[28/3]/[34/3]}^(-1)
{28/34}^(-1) = 34/28 = 17/14
{[3*(16/9)+6*(4/3)-4]/[7*(4/3)+2]}^(-1)
{[16/3+8-4]/[28/3+2]}^(-1)
{[28/3]/[34/3]}^(-1)
{28/34}^(-1) = 34/28 = 17/14
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