Question

Resolva as equações do 1 grau
a) 4x+2x=8-2=
10x-9=21+2x+3x

Answer 1

Resposta:

$a)\\ 4x+2x=8-2\\ 6x=6\\ x=6\div6\\ x=1\\ \\ S=\{1\}\\ \\ b)\\ 10x-9=21+2x+3x\\ 10x-2x-3x=21+9\\ 10x-5x=30\\ 5x=30\\ x=30\div5\\ x=6\\ \\ S=\{6\}$