Question

DAU COROANA+10 puncte!!!!!!

Answer 1

a) 2x=7×3/35
2x=3/5
x=3/10

b)5(x+2)=6×15
5(x+2)=90
x+2=18
x=16

c)3(2x-1) = 4(5-6x)
6x-3 = 20-24x
30x = 23
x=23/30

Sper ca am ajutat. Si apropo cand ai o fractie de genul:
$\frac{a}{b} = \frac{c}{d}$
atunci a×d=b×c. Asta am folosit la fiecare subpunct.