Fill in the blanks:
(i) `frac(-9)(5)=frac(....)(20)=frac(27)(....)=frac(-45)(....)`
(ii) `frac(-6)(11)=frac(-18)(....)=frac(....)(44)`

Fill in the blanks: frac(27)(16)div(...)=frac(-15)(8).

Find x such that: (i) frac(-1)(5)=frac(8)(x) (ii) frac(7)(-3)=frac(x)(6) (iii) frac(3)(5)=frac(x)(-25) (iv) frac(13)(6)=frac(-65)(x) (v) frac(16)(x)=-4 (vi) frac(-48)(x)=2

frac(E)(H):frac(22)(19)::frac(B)(I):?

. Find the product: (i) frac(2)(3) xx frac(5)(7) (ii) frac(3)(4) xx (frac(-5)(8)) (iii) frac(-4)(5) xx 6

Find the values of frac(1)(2) + frac(1)(6) + frac(1)(20)+frac(1)(30)

Write each of the following in power notation: ( i ) frac(5)(7)xxfrac(5)(7)xxfrac(5)(7)xxfrac(5)(7) ( ii ) (frac(-4)(3)) xx (frac(-4)(3)) xx (frac(-4)(3)) xx (frac(-4)(3)) xx (frac(-4)(3)) ( iii ) (frac(-1)(6)) xx (frac(-1)(6)) xx (frac(-1)(6)) ( iv ) (-8) xx (-8) xx (-8) xx (-8) xx (-8)

Add frac(7)(-11) and frac(3)(7).

EXAMPLE 7. Find the sum: (frac(5)(9)+frac(-7)(12)+frac(11)(18)).