Question

Por favor me ajudem nessas equações:
2x+4=0
2×+6=0
-4=2×
20= 5×
2=2×
12=4×
-8=2×
2×+2=0
2×-6=0
3×-12=0

Answer 1

$2x+4=0\to 2x=-4\to x= \frac{-4}{2} \to x=-2\\\\\\ 2x+6=0\to 2x=-6\to x= \frac{-6}{2} \to x=-3\\\\\\ -4=2x\to \frac{-4}{2} =x\to x=-2\\\\\\ 20=5x\to \frac{20}{5} =x\to x=4\\\\\\ 2=2x\to \frac{2}{2}=x \to x=1$



$12=4x\to \frac{12}{4} \to x=3\\\\\\ -8=2x\to \frac{-8}{2} \to x=-4\\\\\\ 2x+2=0\to 2x=-2\to x= \frac{-2}{2} \to -1\\\\\\2x-6=0\to 2x=6\to x= \frac{6}{2} \to x=3\\\\\\ 3x-12=0\to 3x=12\to x= \frac{12}{3} \to x=4$