Question

Eu queria saber essas equações a) ×-3=1
B) -×+4=-3
C) ×+2=-8
D) -×-1=1

Answer 1

$\large\boxed{\begin{array}{l}\sf a)~\rm x-3=1\\\rm x-3+3=1+3\\\rm x=4\\\sf b)~\rm-x+4=-3\\\rm -x+4-4=-3-4\\\rm -x=-7\cdot(-1)\\\rm x=7\\\sf c)~\rm x+2=-8\\\rm x+2-2=-2-8\\\rm x=-10\\\sf d)~\rm -x-1=1\\\rm -x-1+1=1+1\\\rm -x=2\cdot(-1)\\\rm x=-2\end{array}}$