Question

Como resolver Equação
100x+300=80x+500

Answer 1

100x+300=80x+500
100x-80x=500-300
20x=200
x=200/20
x=10
Resposta:  10   

Answer 2

100 x + 300 = 80 + 500
100 x = 80 + 500 - 300
100 x = 280
x = 280/100
x = 2,8