Question

no (a):
Nas figuras, all bllc calcule o valor de x.​

Answer 1

a) 2 / 4  =  3 / x

2 * x = 4 * 3

2x = 12

x = 12/2

x = 6

b) 4 / 12  =  x / 21

12 * x = 4 * 21

12x = 84

x = 84/12

x = 7