Question

resolva as equações abaixo

a x-3 =9
b 4x-9=1-2x
me ajudem​

Answer 1

 a)

$\\x-3=9\\x=9+3\\\\x=12$

b)

$4x-9=1-2x\\4x+2x=1+9\\6x=10\\x=\frac{10}{6} \\\\x=\frac{5}{3}$

:)