Question

vreau si eu rezolvarile corecte si complete (dau coroana)

Answer 1

a ) 5x / 4 = 13 / 2 ( inmultesti in x termenii adica 5x × 2 = 4 ori 13 )

=> 10x = 52 => x = 52 / 10 => x = 5 , 2

b ) 12 / 5 = 4x / 7

=> 84 = 20x => x = 4 , 2

c ) 25 / 6x = 5 / 9 => 225 = 30x => x = 7 , 5

d ) 5 / 28 = 3 / 8x => 40x = 84 => x = 2 , 1

Answer 2

a)=
5x*2=4*13
10x=52
x=52/10=26/5=5,2

b)=
4x*5=12*7
20x=84
x=84/20=21/5=4,2

c)=
6x*5=25*9
30x=225
x=225/30=45/6=15/2=7,5

d)=
8x*5=28*3
40x=84
x=84/40=21/10=2,1