1. la@ H+r.=21
)cU+r = 40
N* W ilu F'ytl Wffi'* tJ+ 4r = 27
r. tf = 27- 4X
/ilout sul.h'Juk ftl, q in u4L
u
seunt W'wt
rV+x-:40
x(ztaix)+L - qo
27T- Llx-' +L = Vo
-]x-12K/'=40
*
* /1to' +zKx 1o =Q Auolnj'r, whalt/ut
^t +7>c ^10 =Q d,N,'h wd,t'kr^
5
-l -----/ _2 f^
I _----* j
,'.(-x*)?rq =Q
-X+5 = Q 2C-2 = O
-X- = --5 ?C:2
)L=5
[= 27 -q)c W W a]r,tw q,AJ,ilw
= 27-qb)
"' V-27 -4b)
td
:27-2o =fi-K
= lq
=/
,0, )c= 5 X=Z
g =t1
u --7

2. Cb) tD61s ilo ,1
ry a,ryhnnh Ao,t)
i
f'rr hnfMA il,* iws nnl W t)n ll4n
ft) ,t:*w"w
+b w o'l'""rk ( 6,6 f" hnls a''l g'vl* drre' fill in W
slq^drl
Wi*
fi t !>z
V< lx+tz
U< zx
(lti) hl zx * 53
9,Wv,l,m W l'JYta w n* u-,ril.,'nnlnt
6 r,2) '('J't, f 's) (tz'5 , L)
Miw'rnw
f^fr is 3(:D + sb)
= 3 +t0 = $lg