Question

Resolva as equações: a)2x-4=16,b)5x+6=26,c)3x-5=10,d)10x=50,e)4x-8=24,f)9x=72

Answer 1

Equações de 1º grau, veja as resoluções:

Letra ''A'':

$2x-4=16\\\\\ 2x = 16 + 4\\\\\ 2x = 20\\\\\ x = \dfrac{20}{2}}\\\\\\\ \large\boxed{\boxed{\boxed{\boxed{\boxed{ x = 10.}}}}}}}}}$

Letra ''B'':

$5x + 6 = 26\\\\\ 5x = 26 - 6\\\\\ 5x = 20\\\\\ x = \dfrac{20}{5}}\\\\\\\ \large\boxed{\boxed{\boxed{\boxed{\boxed{ x = 4.}}}}}}}}}$

Letra ''C'':

$3x - 5 = 10\\\\\ 3x = 10 + 5\\\\\ 3x = 15\\\\\ x = \dfrac{15}{3}}\\\\\\\ \large\boxed{\boxed{\boxed{\boxed{\boxed{ x = 5.}}}}}}}}}}$

Letra ''D'':

$10x = 50\\\\\ x = \dfrac{50}{10}}\\\\\\\ \large\boxed{\boxed{\boxed{\boxed{\boxed{ x = 5.}}}}}}}}}$

Letra ''E'':

$4x-8=24\\\\\ 4x = 24 + 8\\\\\ 4x = 32\\\\\ x =\dfrac{32}{4}}\\\\\\\ \large\boxed{\boxed{\boxed{\boxed{\boxed{ x = 8.}}}}}}}}}}}$

Letra ''F'':

$9x = 72\\\\\ x = \dfrac{72}{9}}\\\\\\\ \large\boxed{\boxed{\boxed{\boxed{\boxed{x = 8.}}}}}}}}$

Espero que te ajude. :).