Question

ajutatima varog frumos cu rezolvarea acestor exercitii​

Answer 1

Salutare!

(1)Lungimea radierei este de 2 cm(Lr)
Lungime creion(Lc)
Lungime pensula(Lp)



Lr=2cm=>Lc=Lrx5
=>Lc=2x5=10cm

Lp= Lcx2=>10x2=>Lp=20 cm


(2) foaia o vom nota cu ‘y’

Y•3=6•4
Y•3=24=>y=24:3=>y=8

32:4=y:2
y:2=8(32:4=8; am mutat termeni)
=>y=2•8=>y=16

5•y=2•10
5•y=20=>y=20:5=>y=4

18:3=30:y
y:30=6=>y=30•6=>y=180

6•3=2•y
2•y=18=>y=18:2=9

y:3=45:5
y:3=7=>y=7•3=21

Sper ca te-am ajutat! Spor la teme!!! ^_^