Question

Calcula el valor de x en las siguientes proporciones urgente

Answer 1

6/15 = (x+3)/50
(6)(50) = (15)(x + 3 )
300 = 15x + 45
15x = 300 - 45
15x = 255
x = 255/15
x = 17   ⇒  6/15 = (17 + 3)/50 ⇒ 6/15 = 20/50

12/8 = 30/(x+1)
(12 )(x+1) = (8)(30)
12x + 12 = 240
12x = 240-12
12x = 228
x = 228/12
x = 19  ⇒  12/8 = 30/(19+1) ⇒ 12/8 = 30/20

                                                            ................Kd