Question

determine o valor x nas proporcoes (usando propriedade fundamental)
x 15
2= 3


20 x+3
------ -------
8 = 2

Answer 1

3.x = 2.15
3x = 30
x = 30/3
x = 10 ✓

8.(x+3) = 2.20
8x +24 = 40
8x = 40 -24
8x = 16
x = 16/8
x = 2 ✓