Question

d) (+3x) : (-9x) =
e) (-14ab3) : (-7ab2) =
f) (-30x3y3) : (-6x2y2)=

Answer 1

Oie, Td Bom?!

d)

$\frac{3x}{ - 9x} = \frac{3 \: . \: 1}{ - 9} = \frac{1}{ - 3} = - \frac{1}{3}$

e)

$\frac{ - 14ab {}^{3} }{ - 7ab {}^{2} } = \frac{ - 14b {}^{3} }{ - 7b {}^{2} } = \frac{2b {}^{3} }{b { }^{2} } = 2b {}^{3 - 2} = 2b {}^{1} = 2b$

f)

$\frac{ - 30x {}^{3} y {}^{3} }{ - 6x {}^{2} y {}^{2} } = \frac{5x {}^{3}y {}^{3} }{x {}^{2} y {}^{2} } = \frac{5xy {}^{3} }{y {}^{2} } = 5xy {}^{3 - 2} = 5xy {}^{1} = 5xy$

Att. Makaveli1996