Question

calcule o valor de X nas proporções. A)9/2x=12/4
B)x/6=x+3/15

Answer 1

A) 9/2 x = 12/4
2 x. 12 = 9.4
24 x = 36
x = 36/24
x = 3/2

B) x/6 = x + 3 / 15
15.x = 6(x + 3 )
15 x = 6 x + 18
15 x - 6 x = 18
9 x = 18
x = 18/9
x = 2