Question

1º). Resolva as equações:
a) x +5 = 8
b) X-4 = 3
c) x + 6 = 5
d) x - 7=7​

Answer 1

Resposta:

Explicação passo-a-passo:

$a)x+5=8\\x=8-5\\x=3\\\\b)x-4=3\\x=3+4\\x=7\\\\c)x+6=5\\x=5-6\\x=-1\\\\d)x-7=7\\x=7+7\\x=14$

Conferindo:

$a) x +5 = 8\\3+5=8\\\\b)x-4=3\\7-4=3\\\\c)x+6=5\\(-1)+6=5\\\\d)x-7=7\\14-7=7$

Answer 2

Olá!

--

☀️ Equação do primeiro grau :

$\\ { \large \displaystyle \sf {a) \: x + 5 = 8}}$

${ \large \displaystyle \sf {x = 8 - 5}}$

${ \green{ \boxed{ \boxed{ \red{ { \large \displaystyle \sf {x = 3}}}}}}}$

${ \large \displaystyle \sf {b) \: x - 4 = 3}}$

${ \large \displaystyle \sf {x = 3 + 4}}$

${ \green{ \boxed{ \boxed{ \red{ { \large \displaystyle \sf {x = 7}}}}}}}$

${ \large \displaystyle \sf {c) \: x + 6 = 5}}$

${ \large \displaystyle \sf {x = 5 - 6}}$

${ \green{ \boxed{ \boxed{ \red{ { \large \displaystyle \sf {x = - 1}}}}}}}$

${ \large \displaystyle \sf {d) \: x - 7 = 7}}$

${ \large \displaystyle \sf {x = 7 + 7}}$

${ \green{ \boxed{ \boxed{ \red{ { \large \displaystyle \sf {x = 14}}}}}}}$

___________________________

Espero ter ajudado! ❤️