Question

Va rog am nevoie in seara asta!dau coroana

Answer 1

x/15=3/5
5x=15*3
5x=45
x=45:5
x=9


12/x=20/15
20x=12*15
20x=180
x=180/20
x=9


(x+1)/16=5/8
8x+8=16*5
8x=80-8
x=72/8
x=9


3/2=(2x+1)/6
4x+2=6*3
4x=18-2
x=16:4
x=4



12/(x+2)=9/6
9x+18=72
9x=72-18
x=54:9
x=6