Question

resolva 2x-(x-1)=5-(x-3)

Answer 1

2x-x+1=5-x+3
2x-x+x=5+3-1
2x=7
x=7/2

ou x=3,5

Answer 2

RESPOSTA

2 x - ( x - 1 ) = 5 - ( x - 3 )

x + 1 = 8 - x

x +1 - 1 = 8 - x - 1

x = 7 - x

x + x = 7 - x + x

2x = 7

x = 7/2