`a) ((-14).15)/(21.(-10))`
`=(-7.3.5.3)/(7.3.(-2).5)`
`=3/2`
`b) ((-7).12)/((-16).(-14))`
`=(-7.3.2.2)/(-2.2.2.(-7).2)`
`=(-3)/4`
`c) ((-11).(-5))/(15.22) `
`=(-11.(-5))/(3.5.11.2)`
`=1/6`
`d) ((-10).(-18))/((-6).25.7)`
`=(-5.2.-2.3.3)/(-2.3.5.5.7)`
`=6/35`
`e) (5.7-7.9)/(7.2+6.7)`
`=(7.(5-9))/(7.(2+6))`
`=-4/8`
`=-1/2`
`f) (11.9-22.3)/(33.2)`
`=(33.(3-2))/(33.2)`
`=1/2`
a)(−14).1521.(−10)�)(-14).1521.(-10)
=−7.3.5.37.3.(−2).5=-7.3.5.37.3.(-2).5
=32=32
b)(−7).12(−16).(−14)�)(-7).12(-16).(-14)
=−7.3.2.2−2.2.2.(−7).2=-7.3.2.2-2.2.2.(-7).2
=−34=-34
c)(−11).(−5)15.22�)(-11).(-5)15.22
=−11.(−5)3.5.11.2=-11.(-5)3.5.11.2
=16=16
d)(−10).(−18)(−6).25.7�)(-10).(-18)(-6).25.7
=−5.2.−2.3.3−2.3.5.5.7=-5.2.-2.3.3-2.3.5.5.7
=635=635
e)5.7−7.97.2+6.7�)5.7-7.97.2+6.7
=7.(5−9)7.(2+6)=7.(5-9)7.(2+6)
=−48=-48
=−12=-12
f)11.9−22.333.2�)11.9-22.333.2
=33.(3−2)33.2=33.(3-2)33.2
=12
