Question

respostas passo a passo das equações de 1 grau: 8x-3(2x+2)=x-(x-4); 10-(8x-2)=5x+2(-4x+1); 2x+25=3x+3(x+7); x-3(x-3)=x-2(x-2) e 4x-2(x+1)=2x-(x+1)

Answer 1

$8x - 3(2x - 2) = x - (x - 4) \\ 8x - 6x - 6 = x -x + 4 \\ 2x - 6 = 4 \\ 2x = 4 + 6 \\ 2x = 10 \\ x = 5$
$10 - (8x - 2) = 5x + 2( - 4x + 1) \\ 10 - 8x + 2 = 5x - 8x + 2 \\ 10 = 5x \\ 5x = 10 \\ x = 2$
$2x + 25 = 3x + 3(x + 7) \\ 2x + 25 = 3x + 3x + 21 \\ 2x + 25 = 6x + 21 \\ 2x - 6x = 21 - 25 \\ - 4 = - 4 \\x = 1$
$x - 3(x - 3) =x - 2(x - 2) \\ - 3x + 9 = - 2x - 2 \\ - 3x + 2x = - 2 - 9 \\ - x = - 11 \\ x = 11$
$4x - 2(x + 1) = 2x - (x + 1) \\ 4x - 2x - 2 = 2x - x - 1 \\ 2x - 2 = x - 1 \\ 2x - x = - 1 + 2 \\x = 1$