Question

a) |x-1= 10
b) (3x + 7) = x + 7
+
c) |x-9= |2x + 1]​

Answer 1

Resposta:

a) x= 11

b) x= 1/2 ou 0,5

c) x= -10

Explicação passo-a-passo:

$a)\\x-1=10\\x=10+1\\x=11\\\\b)\\(3x+7)=x+7\\3x-x=7-7\\2x=0\\x=\frac{1}{2}\\\\c)\\x-9=2x+1\\-9-1=2x-x\\-10=x$