Question

Me ajudeeeem pfvr, cálculos pfvr

Answer 1

1) 4/10=2/x

4x=20

x=20/4

x=5cm

10/12=5/y

10y=60

y=60/1020

y=6 cm

2) 10/15=3x+1/5x-2

50x-20=45x+15

50x-45x=+15-20

5x=-5

x=-5/5

x=-1