Question

Va rog ! Rezolvati pentru coronita

Answer 1

a)(6x+2x):6=40⇒(8x):6=40⇒8x=6x40⇒8x=240⇒x=240/8⇒x=30
b)(16x-6x)×2=100⇒(10x)×2=100⇒10x=100:2⇒10x=50⇒x=50/10⇒x=5
c)3.2(1.5+4.8x)=14.4⇒4.8+15.36x=14.4⇒15.36x=14.4-4.8⇒15.36x=9.6⇒x=9.6/15.36
sucees

Answer 2

a)  (6x+2x):6=40
8x=40·6
8x=240
x=240:8
x=30

b) (16x-6x)·2=100
10x=100:2
10x=50
x=50:10
x=5

c) 3,2·(1,5+4,8x)=14,4
4,8+15,36x=14,4
15,36x=14,4-4,8
15,36x=9,6
x=9,6:15,36
x=0,625

d) [(9,43+12)·10]:100=
(21,43·10):100=
214,3:100=2,143