Question

Resolva Equações
a)-2-x+5=-2x+3x-10x
b)-1-3x-7x+4-2=0
c)0=-3x+1-x-7x+10x-15
POR FAVOR ME AJUDEM...

Answer 1

$a) \\ -2-x+5=-2x+3x-10x \\ \\ -x + 3 = -9x \\ \\ -x + 9x = -3 \\ \\ 8x = -3 \\ \\ x = -\dfrac{3}{8}$

=============================

$b) \\ -1-3x-7x+4-2=0 \\ \\ -10x - 1 = 0 *(-1) \\ \\ 10x + 1 = 0 \\ \\ x = \dfrac{1}{10}$

=============================
$c) \\ 0=-3x+1-x-7x+10x-15 \\ \\ 3x + x + 7x - 10x = -15 + 1 \\ \\ -x = -14 (-1)\\ \\ x = 14$