Respostas

2014-05-29T20:41:57-03:00
5x + 3x = 16
8x = 16
x=  \frac{16}{8}
x= 2

x+x+8=54
2x + 8 = 54
2x = 54 - 8
2x = 46
x=  \frac{46}{2}
x= 23

4 5 4