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Usuário do Brainly Usuário do Brainly
A)
 \frac{30a^4b^3c^3}{40ab^2c} = \frac{3a^3bc^2}{4}

b)
 \frac{5m^2p-20m^3}{10m^3} = \frac{5m^2(p-4m)}{10m^3} = \frac{p-4}{2m}

c)
 \frac{5m+5}{3m^2-3} = \frac{5(m+1)}{3(m^2-1)} = \frac{5(m+1)}{3(m+1)(m-1)} = \frac{5}{3(m-1)} = \frac{5}{3m-3}

d)
 \frac{ax+bx-2ay-2by}{ax-bx-2ay+2by} = \\  \frac{x(a+b)-2y(a+b)}{x(a-b)-2y(a-b)} = \\  \frac{(x-2y)(a+b)}{(x-2y)(a-b)} = \\  \frac{a+b}{a-b}
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