Question

Resolva as equações do lºgrau:

a) 3x + 2(2x - 4) = 2(x - 1)

b) 5x – 20 = 2x - 4

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

d) 2m + 6 = m​

Answer 1

a)3x+4x-8=2x-2>>3x+4x-2x=-2+8>>5x=6>>x=6/5

b)5x-2x=-4+20>>>3x=16>>x=16/3

c)3x-3-2x=5x-15>>>3x-5x=-15+3>>-2x=-12(-1)>>>2x=12>>x=12/2>>x=6

d)2m-m=-6>>m=-6

Espero ter ajudado,boa noite!