<span>476,1</span>≈≈480<span>
</span><span>1039,02</span>≈1040<span>
</span>856,2≈860
<span>
1000,2</span>≈1 000
S=ab. S=144м2. b=9м. a=s:b. a=144:9=16м. P=2(a+b)=2(16+9)=2x25=50м
1)5u+10+14<6-u 2)4u+12<3u+6 3)6u+3>5u-5
5u+u<6-24 4u-3u<6-12 6u-5u>-5-3
6u<-18 u<-6 u>-8
u<-18:6
u<-3
1 (362+526)-270=888-270=618
2 (900-456)+305=444+305=749
3 (457-96)-(801-795)=361-6=355