Question

calcular o valor de x na proporção x +3/ X+2 = 4/5

Answer 1

$\frac{x+3}{x+2} = \frac{4}{5} =4.x+2=5.x+3=  4x+8=5x+15= 4x-5x=15-8= 1x=7= x=7/1= x=7$