Question

me ajudem com a resposta dessas equacoes. respondaos em etapas
11+2x = -3x+31
7x+9 -3x = 23
12+6x-5=-4x+1-4
2x+9=9-15x

Answer 1

11+2x=-3x+31----->>>>2x+3x=31-11---->>5x=20-->>x=4////////////////////////////// 7x+9-3x=23---->>4x+9=23----->>>>4x=14--->>>x=14/4------>>>>x=7/2

Answer 2

11+2x=-3x+31
3x+2x=-11+31 
5x=20
x=20 =
    5  
x=4